1036 lines
53 KiB
HTML
1036 lines
53 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="Asciidoctor 1.5.8">
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<title>git-filter-branch(1)</title>
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<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700">
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<style>
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/* Asciidoctor default stylesheet | MIT License | http://asciidoctor.org */
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/* Uncomment @import statement below to use as custom stylesheet */
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/*@import "https://fonts.googleapis.com/css?family=Open+Sans:300,300italic,400,400italic,600,600italic%7CNoto+Serif:400,400italic,700,700italic%7CDroid+Sans+Mono:400,700";*/
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article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block}
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audio,canvas,video{display:inline-block}
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audio:not([controls]){display:none;height:0}
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script{display:none!important}
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html{font-family:sans-serif;-ms-text-size-adjust:100%;-webkit-text-size-adjust:100%}
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a{background:transparent}
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a:focus{outline:thin dotted}
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a:active,a:hover{outline:0}
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h1{font-size:2em;margin:.67em 0}
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abbr[title]{border-bottom:1px dotted}
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b,strong{font-weight:bold}
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dfn{font-style:italic}
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hr{-moz-box-sizing:content-box;box-sizing:content-box;height:0}
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mark{background:#ff0;color:#000}
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code,kbd,pre,samp{font-family:monospace;font-size:1em}
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pre{white-space:pre-wrap}
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q{quotes:"\201C" "\201D" "\2018" "\2019"}
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small{font-size:80%}
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sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}
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sup{top:-.5em}
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sub{bottom:-.25em}
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img{border:0}
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svg:not(:root){overflow:hidden}
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figure{margin:0}
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fieldset{border:1px solid silver;margin:0 2px;padding:.35em .625em .75em}
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legend{border:0;padding:0}
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button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
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button,input{line-height:normal}
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button,select{text-transform:none}
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button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
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button[disabled],html input[disabled]{cursor:default}
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input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0}
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button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
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textarea{overflow:auto;vertical-align:top}
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table{border-collapse:collapse;border-spacing:0}
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*,*::before,*::after{-moz-box-sizing:border-box;-webkit-box-sizing:border-box;box-sizing:border-box}
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html,body{font-size:100%}
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body{background:#fff;color:rgba(0,0,0,.8);padding:0;margin:0;font-family:"Noto Serif","DejaVu Serif",serif;font-weight:400;font-style:normal;line-height:1;position:relative;cursor:auto;tab-size:4;-moz-osx-font-smoothing:grayscale;-webkit-font-smoothing:antialiased}
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a:hover{cursor:pointer}
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img,object,embed{max-width:100%;height:auto}
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object,embed{height:100%}
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img{-ms-interpolation-mode:bicubic}
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.left{float:left!important}
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.right{float:right!important}
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.text-left{text-align:left!important}
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.text-right{text-align:right!important}
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.text-center{text-align:center!important}
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.text-justify{text-align:justify!important}
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.hide{display:none}
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img,object,svg{display:inline-block;vertical-align:middle}
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textarea{height:auto;min-height:50px}
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select{width:100%}
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.center{margin-left:auto;margin-right:auto}
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.stretch{width:100%}
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.subheader,.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{line-height:1.45;color:#7a2518;font-weight:400;margin-top:0;margin-bottom:.25em}
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div,dl,dt,dd,ul,ol,li,h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6,pre,form,p,blockquote,th,td{margin:0;padding:0;direction:ltr}
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a{color:#2156a5;text-decoration:underline;line-height:inherit}
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a:hover,a:focus{color:#1d4b8f}
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a img{border:none}
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p{font-family:inherit;font-weight:400;font-size:1em;line-height:1.6;margin-bottom:1.25em;text-rendering:optimizeLegibility}
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p aside{font-size:.875em;line-height:1.35;font-style:italic}
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h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{font-family:"Open Sans","DejaVu Sans",sans-serif;font-weight:300;font-style:normal;color:#ba3925;text-rendering:optimizeLegibility;margin-top:1em;margin-bottom:.5em;line-height:1.0125em}
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h1 small,h2 small,h3 small,#toctitle small,.sidebarblock>.content>.title small,h4 small,h5 small,h6 small{font-size:60%;color:#e99b8f;line-height:0}
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h1{font-size:2.125em}
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h2{font-size:1.6875em}
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h3,#toctitle,.sidebarblock>.content>.title{font-size:1.375em}
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h4,h5{font-size:1.125em}
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h6{font-size:1em}
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hr{border:solid #dddddf;border-width:1px 0 0;clear:both;margin:1.25em 0 1.1875em;height:0}
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em,i{font-style:italic;line-height:inherit}
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strong,b{font-weight:bold;line-height:inherit}
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small{font-size:60%;line-height:inherit}
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code{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;color:rgba(0,0,0,.9)}
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ul,ol,dl{font-size:1em;line-height:1.6;margin-bottom:1.25em;list-style-position:outside;font-family:inherit}
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ul,ol{margin-left:1.5em}
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ul li ul,ul li ol{margin-left:1.25em;margin-bottom:0;font-size:1em}
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ul.square li ul,ul.circle li ul,ul.disc li ul{list-style:inherit}
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ul.square{list-style-type:square}
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ul.circle{list-style-type:circle}
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ul.disc{list-style-type:disc}
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ol li ul,ol li ol{margin-left:1.25em;margin-bottom:0}
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dl dt{margin-bottom:.3125em;font-weight:bold}
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dl dd{margin-bottom:1.25em}
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abbr,acronym{text-transform:uppercase;font-size:90%;color:rgba(0,0,0,.8);border-bottom:1px dotted #ddd;cursor:help}
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abbr{text-transform:none}
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blockquote{margin:0 0 1.25em;padding:.5625em 1.25em 0 1.1875em;border-left:1px solid #ddd}
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blockquote cite{display:block;font-size:.9375em;color:rgba(0,0,0,.6)}
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blockquote cite::before{content:"\2014 \0020"}
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blockquote cite a,blockquote cite a:visited{color:rgba(0,0,0,.6)}
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blockquote,blockquote p{line-height:1.6;color:rgba(0,0,0,.85)}
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@media screen and (min-width:768px){h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2}
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h1{font-size:2.75em}
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h2{font-size:2.3125em}
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h3,#toctitle,.sidebarblock>.content>.title{font-size:1.6875em}
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h4{font-size:1.4375em}}
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table{background:#fff;margin-bottom:1.25em;border:solid 1px #dedede}
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table thead,table tfoot{background:#f7f8f7}
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table thead tr th,table thead tr td,table tfoot tr th,table tfoot tr td{padding:.5em .625em .625em;font-size:inherit;color:rgba(0,0,0,.8);text-align:left}
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table tr th,table tr td{padding:.5625em .625em;font-size:inherit;color:rgba(0,0,0,.8)}
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table tr.even,table tr.alt,table tr:nth-of-type(even){background:#f8f8f7}
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table thead tr th,table tfoot tr th,table tbody tr td,table tr td,table tfoot tr td{display:table-cell;line-height:1.6}
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h1,h2,h3,#toctitle,.sidebarblock>.content>.title,h4,h5,h6{line-height:1.2;word-spacing:-.05em}
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h1 strong,h2 strong,h3 strong,#toctitle strong,.sidebarblock>.content>.title strong,h4 strong,h5 strong,h6 strong{font-weight:400}
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.clearfix::before,.clearfix::after,.float-group::before,.float-group::after{content:" ";display:table}
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.clearfix::after,.float-group::after{clear:both}
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*:not(pre)>code{font-size:.9375em;font-style:normal!important;letter-spacing:0;padding:.1em .5ex;word-spacing:-.15em;background-color:#f7f7f8;-webkit-border-radius:4px;border-radius:4px;line-height:1.45;text-rendering:optimizeSpeed;word-wrap:break-word}
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*:not(pre)>code.nobreak{word-wrap:normal}
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*:not(pre)>code.nowrap{white-space:nowrap}
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pre,pre>code{line-height:1.45;color:rgba(0,0,0,.9);font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;font-weight:400;text-rendering:optimizeSpeed}
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em em{font-style:normal}
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strong strong{font-weight:400}
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.keyseq{color:rgba(51,51,51,.8)}
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kbd{font-family:"Droid Sans Mono","DejaVu Sans Mono",monospace;display:inline-block;color:rgba(0,0,0,.8);font-size:.65em;line-height:1.45;background-color:#f7f7f7;border:1px solid #ccc;-webkit-border-radius:3px;border-radius:3px;-webkit-box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em white inset;box-shadow:0 1px 0 rgba(0,0,0,.2),0 0 0 .1em #fff inset;margin:0 .15em;padding:.2em .5em;vertical-align:middle;position:relative;top:-.1em;white-space:nowrap}
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.keyseq kbd:first-child{margin-left:0}
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.keyseq kbd:last-child{margin-right:0}
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.menuseq,.menuref{color:#000}
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.menuseq b:not(.caret),.menuref{font-weight:inherit}
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.menuseq{word-spacing:-.02em}
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.menuseq b.caret{font-size:1.25em;line-height:.8}
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.menuseq i.caret{font-weight:bold;text-align:center;width:.45em}
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b.button::before,b.button::after{position:relative;top:-1px;font-weight:400}
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b.button::before{content:"[";padding:0 3px 0 2px}
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b.button::after{content:"]";padding:0 2px 0 3px}
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p a>code:hover{color:rgba(0,0,0,.9)}
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#header,#content,#footnotes,#footer{width:100%;margin-left:auto;margin-right:auto;margin-top:0;margin-bottom:0;max-width:62.5em;*zoom:1;position:relative;padding-left:.9375em;padding-right:.9375em}
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#header::before,#header::after,#content::before,#content::after,#footnotes::before,#footnotes::after,#footer::before,#footer::after{content:" ";display:table}
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#header::after,#content::after,#footnotes::after,#footer::after{clear:both}
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#content{margin-top:1.25em}
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#content::before{content:none}
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#header>h1:first-child{color:rgba(0,0,0,.85);margin-top:2.25rem;margin-bottom:0}
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#header>h1:first-child+#toc{margin-top:8px;border-top:1px solid #dddddf}
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#header>h1:only-child,body.toc2 #header>h1:nth-last-child(2){border-bottom:1px solid #dddddf;padding-bottom:8px}
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#header .details{border-bottom:1px solid #dddddf;line-height:1.45;padding-top:.25em;padding-bottom:.25em;padding-left:.25em;color:rgba(0,0,0,.6);display:-ms-flexbox;display:-webkit-flex;display:flex;-ms-flex-flow:row wrap;-webkit-flex-flow:row wrap;flex-flow:row wrap}
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#header .details span:first-child{margin-left:-.125em}
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#header .details span.email a{color:rgba(0,0,0,.85)}
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#header .details br{display:none}
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#header .details br+span::before{content:"\00a0\2013\00a0"}
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#header .details br+span.author::before{content:"\00a0\22c5\00a0";color:rgba(0,0,0,.85)}
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#header .details br+span#revremark::before{content:"\00a0|\00a0"}
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#header #revnumber{text-transform:capitalize}
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#header #revnumber::after{content:"\00a0"}
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#content>h1:first-child:not([class]){color:rgba(0,0,0,.85);border-bottom:1px solid #dddddf;padding-bottom:8px;margin-top:0;padding-top:1rem;margin-bottom:1.25rem}
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#toc{border-bottom:1px solid #e7e7e9;padding-bottom:.5em}
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#toc>ul{margin-left:.125em}
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#toc ul.sectlevel0>li>a{font-style:italic}
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#toc ul.sectlevel0 ul.sectlevel1{margin:.5em 0}
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#toc ul{font-family:"Open Sans","DejaVu Sans",sans-serif;list-style-type:none}
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#toc li{line-height:1.3334;margin-top:.3334em}
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#toc a{text-decoration:none}
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#toc a:active{text-decoration:underline}
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#toctitle{color:#7a2518;font-size:1.2em}
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@media screen and (min-width:768px){#toctitle{font-size:1.375em}
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body.toc2{padding-left:15em;padding-right:0}
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#toc.toc2{margin-top:0!important;background-color:#f8f8f7;position:fixed;width:15em;left:0;top:0;border-right:1px solid #e7e7e9;border-top-width:0!important;border-bottom-width:0!important;z-index:1000;padding:1.25em 1em;height:100%;overflow:auto}
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#toc.toc2 #toctitle{margin-top:0;margin-bottom:.8rem;font-size:1.2em}
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#toc.toc2>ul{font-size:.9em;margin-bottom:0}
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#toc.toc2 ul ul{margin-left:0;padding-left:1em}
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#toc.toc2 ul.sectlevel0 ul.sectlevel1{padding-left:0;margin-top:.5em;margin-bottom:.5em}
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body.toc2.toc-right{padding-left:0;padding-right:15em}
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body.toc2.toc-right #toc.toc2{border-right-width:0;border-left:1px solid #e7e7e9;left:auto;right:0}}
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@media screen and (min-width:1280px){body.toc2{padding-left:20em;padding-right:0}
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#toc.toc2{width:20em}
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#toc.toc2 #toctitle{font-size:1.375em}
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#toc.toc2>ul{font-size:.95em}
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#toc.toc2 ul ul{padding-left:1.25em}
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body.toc2.toc-right{padding-left:0;padding-right:20em}}
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#content #toc{border-style:solid;border-width:1px;border-color:#e0e0dc;margin-bottom:1.25em;padding:1.25em;background:#f8f8f7;-webkit-border-radius:4px;border-radius:4px}
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#content #toc>:first-child{margin-top:0}
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#content #toc>:last-child{margin-bottom:0}
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#footer{max-width:100%;background-color:rgba(0,0,0,.8);padding:1.25em}
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#footer-text{color:rgba(255,255,255,.8);line-height:1.44}
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#content{margin-bottom:.625em}
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.sect1{padding-bottom:.625em}
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@media screen and (min-width:768px){#content{margin-bottom:1.25em}
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.sect1{padding-bottom:1.25em}}
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.sect1:last-child{padding-bottom:0}
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.sect1+.sect1{border-top:1px solid #e7e7e9}
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#content h1>a.anchor,h2>a.anchor,h3>a.anchor,#toctitle>a.anchor,.sidebarblock>.content>.title>a.anchor,h4>a.anchor,h5>a.anchor,h6>a.anchor{position:absolute;z-index:1001;width:1.5ex;margin-left:-1.5ex;display:block;text-decoration:none!important;visibility:hidden;text-align:center;font-weight:400}
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#content h1>a.anchor::before,h2>a.anchor::before,h3>a.anchor::before,#toctitle>a.anchor::before,.sidebarblock>.content>.title>a.anchor::before,h4>a.anchor::before,h5>a.anchor::before,h6>a.anchor::before{content:"\00A7";font-size:.85em;display:block;padding-top:.1em}
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#content h1:hover>a.anchor,#content h1>a.anchor:hover,h2:hover>a.anchor,h2>a.anchor:hover,h3:hover>a.anchor,#toctitle:hover>a.anchor,.sidebarblock>.content>.title:hover>a.anchor,h3>a.anchor:hover,#toctitle>a.anchor:hover,.sidebarblock>.content>.title>a.anchor:hover,h4:hover>a.anchor,h4>a.anchor:hover,h5:hover>a.anchor,h5>a.anchor:hover,h6:hover>a.anchor,h6>a.anchor:hover{visibility:visible}
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#content h1>a.link,h2>a.link,h3>a.link,#toctitle>a.link,.sidebarblock>.content>.title>a.link,h4>a.link,h5>a.link,h6>a.link{color:#ba3925;text-decoration:none}
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||
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#content h1>a.link:hover,h2>a.link:hover,h3>a.link:hover,#toctitle>a.link:hover,.sidebarblock>.content>.title>a.link:hover,h4>a.link:hover,h5>a.link:hover,h6>a.link:hover{color:#a53221}
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||
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.audioblock,.imageblock,.literalblock,.listingblock,.stemblock,.videoblock{margin-bottom:1.25em}
|
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.admonitionblock td.content>.title,.audioblock>.title,.exampleblock>.title,.imageblock>.title,.listingblock>.title,.literalblock>.title,.stemblock>.title,.openblock>.title,.paragraph>.title,.quoteblock>.title,table.tableblock>.title,.verseblock>.title,.videoblock>.title,.dlist>.title,.olist>.title,.ulist>.title,.qlist>.title,.hdlist>.title{text-rendering:optimizeLegibility;text-align:left;font-family:"Noto Serif","DejaVu Serif",serif;font-size:1rem;font-style:italic}
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table.tableblock.fit-content>caption.title{white-space:nowrap;width:0}
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.paragraph.lead>p,#preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:1.21875em;line-height:1.6;color:rgba(0,0,0,.85)}
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table.tableblock #preamble>.sectionbody>[class="paragraph"]:first-of-type p{font-size:inherit}
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.admonitionblock>table{border-collapse:separate;border:0;background:none;width:100%}
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.admonitionblock>table td.icon{text-align:center;width:80px}
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.admonitionblock>table td.icon img{max-width:none}
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.admonitionblock>table td.icon .title{font-weight:bold;font-family:"Open Sans","DejaVu Sans",sans-serif;text-transform:uppercase}
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.admonitionblock>table td.content{padding-left:1.125em;padding-right:1.25em;border-left:1px solid #dddddf;color:rgba(0,0,0,.6)}
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.admonitionblock>table td.content>:last-child>:last-child{margin-bottom:0}
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|
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|
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h1,h2,p,td.content,span.alt{letter-spacing:-.01em}
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p strong,td.content strong,div.footnote strong{letter-spacing:-.005em}
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p{margin-bottom:1.25rem}
|
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.sidebarblock p,.sidebarblock dt,.sidebarblock td.content,p.tableblock{font-size:1em}
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|
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|
.print-only{display:none!important}
|
||
|
@page{margin:1.25cm .75cm}
|
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|
@media print{*{-webkit-box-shadow:none!important;box-shadow:none!important;text-shadow:none!important}
|
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|
html{font-size:80%}
|
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|
a{color:inherit!important;text-decoration:underline!important}
|
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|
a.bare,a[href^="#"],a[href^="mailto:"]{text-decoration:none!important}
|
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|
a[href^="http:"]:not(.bare)::after,a[href^="https:"]:not(.bare)::after{content:"(" attr(href) ")";display:inline-block;font-size:.875em;padding-left:.25em}
|
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|
abbr[title]::after{content:" (" attr(title) ")"}
|
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pre,blockquote,tr,img,object,svg{page-break-inside:avoid}
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thead{display:table-header-group}
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|
svg{max-width:100%}
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p,blockquote,dt,td.content{font-size:1em;orphans:3;widows:3}
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|
h2,h3,#toctitle,.sidebarblock>.content>.title{page-break-after:avoid}
|
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|
#toc,.sidebarblock,.exampleblock>.content{background:none!important}
|
||
|
#toc{border-bottom:1px solid #dddddf!important;padding-bottom:0!important}
|
||
|
body.book #header{text-align:center}
|
||
|
body.book #header>h1:first-child{border:0!important;margin:2.5em 0 1em}
|
||
|
body.book #header .details{border:0!important;display:block;padding:0!important}
|
||
|
body.book #header .details span:first-child{margin-left:0!important}
|
||
|
body.book #header .details br{display:block}
|
||
|
body.book #header .details br+span::before{content:none!important}
|
||
|
body.book #toc{border:0!important;text-align:left!important;padding:0!important;margin:0!important}
|
||
|
body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-break-before:always}
|
||
|
.listingblock code[data-lang]::before{display:block}
|
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|
#footer{padding:0 .9375em}
|
||
|
.hide-on-print{display:none!important}
|
||
|
.print-only{display:block!important}
|
||
|
.hide-for-print{display:none!important}
|
||
|
.show-for-print{display:inherit!important}}
|
||
|
@media print,amzn-kf8{#header>h1:first-child{margin-top:1.25rem}
|
||
|
.sect1{padding:0!important}
|
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|
.sect1+.sect1{border:0}
|
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|
#footer{background:none}
|
||
|
#footer-text{color:rgba(0,0,0,.6);font-size:.9em}}
|
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|
@media amzn-kf8{#header,#content,#footnotes,#footer{padding:0}}
|
||
|
</style>
|
||
|
</head>
|
||
|
<body class="manpage">
|
||
|
<div id="header">
|
||
|
<h1>git-filter-branch(1) Manual Page</h1>
|
||
|
<h2 id="_name">NAME</h2>
|
||
|
<div class="sectionbody">
|
||
|
<p>git-filter-branch - Rewrite branches</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div id="content">
|
||
|
<div class="sect1">
|
||
|
<h2 id="_synopsis">SYNOPSIS</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="verseblock">
|
||
|
<pre class="content"><em>git filter-branch</em> [--setup <command>] [--subdirectory-filter <directory>]
|
||
|
[--env-filter <command>] [--tree-filter <command>]
|
||
|
[--index-filter <command>] [--parent-filter <command>]
|
||
|
[--msg-filter <command>] [--commit-filter <command>]
|
||
|
[--tag-name-filter <command>] [--prune-empty]
|
||
|
[--original <namespace>] [-d <directory>] [-f | --force]
|
||
|
[--state-branch <branch>] [--] [<rev-list options>…​]</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_description">DESCRIPTION</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>Lets you rewrite Git revision history by rewriting the branches mentioned
|
||
|
in the <rev-list options>, applying custom filters on each revision.
|
||
|
Those filters can modify each tree (e.g. removing a file or running
|
||
|
a perl rewrite on all files) or information about each commit.
|
||
|
Otherwise, all information (including original commit times or merge
|
||
|
information) will be preserved.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The command will only rewrite the <em>positive</em> refs mentioned in the
|
||
|
command line (e.g. if you pass <em>a..b</em>, only <em>b</em> will be rewritten).
|
||
|
If you specify no filters, the commits will be recommitted without any
|
||
|
changes, which would normally have no effect. Nevertheless, this may be
|
||
|
useful in the future for compensating for some Git bugs or such,
|
||
|
therefore such a usage is permitted.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p><strong>NOTE</strong>: This command honors <code>.git/info/grafts</code> file and refs in
|
||
|
the <code>refs/replace/</code> namespace.
|
||
|
If you have any grafts or replacement refs defined, running this command
|
||
|
will make them permanent.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p><strong>WARNING</strong>! The rewritten history will have different object names for all
|
||
|
the objects and will not converge with the original branch. You will not
|
||
|
be able to easily push and distribute the rewritten branch on top of the
|
||
|
original branch. Please do not use this command if you do not know the
|
||
|
full implications, and avoid using it anyway, if a simple single commit
|
||
|
would suffice to fix your problem. (See the "RECOVERING FROM UPSTREAM
|
||
|
REBASE" section in <a href="git-rebase.html">git-rebase</a>(1) for further information about
|
||
|
rewriting published history.)</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Always verify that the rewritten version is correct: The original refs,
|
||
|
if different from the rewritten ones, will be stored in the namespace
|
||
|
<em>refs/original/</em>.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Note that since this operation is very I/O expensive, it might
|
||
|
be a good idea to redirect the temporary directory off-disk with the
|
||
|
<code>-d</code> option, e.g. on tmpfs. Reportedly the speedup is very noticeable.</p>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="_filters">Filters</h3>
|
||
|
<div class="paragraph">
|
||
|
<p>The filters are applied in the order as listed below. The <command>
|
||
|
argument is always evaluated in the shell context using the <em>eval</em> command
|
||
|
(with the notable exception of the commit filter, for technical reasons).
|
||
|
Prior to that, the <code>$GIT_COMMIT</code> environment variable will be set to contain
|
||
|
the id of the commit being rewritten. Also, GIT_AUTHOR_NAME,
|
||
|
GIT_AUTHOR_EMAIL, GIT_AUTHOR_DATE, GIT_COMMITTER_NAME, GIT_COMMITTER_EMAIL,
|
||
|
and GIT_COMMITTER_DATE are taken from the current commit and exported to
|
||
|
the environment, in order to affect the author and committer identities of
|
||
|
the replacement commit created by <a href="git-commit-tree.html">git-commit-tree</a>(1) after the
|
||
|
filters have run.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If any evaluation of <command> returns a non-zero exit status, the whole
|
||
|
operation will be aborted.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>A <em>map</em> function is available that takes an "original sha1 id" argument
|
||
|
and outputs a "rewritten sha1 id" if the commit has been already
|
||
|
rewritten, and "original sha1 id" otherwise; the <em>map</em> function can
|
||
|
return several ids on separate lines if your commit filter emitted
|
||
|
multiple commits.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_options">OPTIONS</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="dlist">
|
||
|
<dl>
|
||
|
<dt class="hdlist1">--setup <command></dt>
|
||
|
<dd>
|
||
|
<p>This is not a real filter executed for each commit but a one
|
||
|
time setup just before the loop. Therefore no commit-specific
|
||
|
variables are defined yet. Functions or variables defined here
|
||
|
can be used or modified in the following filter steps except
|
||
|
the commit filter, for technical reasons.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--subdirectory-filter <directory></dt>
|
||
|
<dd>
|
||
|
<p>Only look at the history which touches the given subdirectory.
|
||
|
The result will contain that directory (and only that) as its
|
||
|
project root. Implies <a href="#Remap_to_ancestor">Remap to ancestor</a>.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--env-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This filter may be used if you only need to modify the environment
|
||
|
in which the commit will be performed. Specifically, you might
|
||
|
want to rewrite the author/committer name/email/time environment
|
||
|
variables (see <a href="git-commit-tree.html">git-commit-tree</a>(1) for details).</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--tree-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This is the filter for rewriting the tree and its contents.
|
||
|
The argument is evaluated in shell with the working
|
||
|
directory set to the root of the checked out tree. The new tree
|
||
|
is then used as-is (new files are auto-added, disappeared files
|
||
|
are auto-removed - neither .gitignore files nor any other ignore
|
||
|
rules <strong>HAVE ANY EFFECT</strong>!).</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--index-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This is the filter for rewriting the index. It is similar to the
|
||
|
tree filter but does not check out the tree, which makes it much
|
||
|
faster. Frequently used with <code>git rm --cached
|
||
|
--ignore-unmatch ...</code>, see EXAMPLES below. For hairy
|
||
|
cases, see <a href="git-update-index.html">git-update-index</a>(1).</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--parent-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This is the filter for rewriting the commit’s parent list.
|
||
|
It will receive the parent string on stdin and shall output
|
||
|
the new parent string on stdout. The parent string is in
|
||
|
the format described in <a href="git-commit-tree.html">git-commit-tree</a>(1): empty for
|
||
|
the initial commit, "-p parent" for a normal commit and
|
||
|
"-p parent1 -p parent2 -p parent3 …​" for a merge commit.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--msg-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This is the filter for rewriting the commit messages.
|
||
|
The argument is evaluated in the shell with the original
|
||
|
commit message on standard input; its standard output is
|
||
|
used as the new commit message.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--commit-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This is the filter for performing the commit.
|
||
|
If this filter is specified, it will be called instead of the
|
||
|
<em>git commit-tree</em> command, with arguments of the form
|
||
|
"<TREE_ID> [(-p <PARENT_COMMIT_ID>)…​]" and the log message on
|
||
|
stdin. The commit id is expected on stdout.</p>
|
||
|
<div class="paragraph">
|
||
|
<p>As a special extension, the commit filter may emit multiple
|
||
|
commit ids; in that case, the rewritten children of the original commit will
|
||
|
have all of them as parents.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>You can use the <em>map</em> convenience function in this filter, and other
|
||
|
convenience functions, too. For example, calling <em>skip_commit "$@"</em>
|
||
|
will leave out the current commit (but not its changes! If you want
|
||
|
that, use <em>git rebase</em> instead).</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>You can also use the <code>git_commit_non_empty_tree "$@"</code> instead of
|
||
|
<code>git commit-tree "$@"</code> if you don’t wish to keep commits with a single parent
|
||
|
and that makes no change to the tree.</p>
|
||
|
</div>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--tag-name-filter <command></dt>
|
||
|
<dd>
|
||
|
<p>This is the filter for rewriting tag names. When passed,
|
||
|
it will be called for every tag ref that points to a rewritten
|
||
|
object (or to a tag object which points to a rewritten object).
|
||
|
The original tag name is passed via standard input, and the new
|
||
|
tag name is expected on standard output.</p>
|
||
|
<div class="paragraph">
|
||
|
<p>The original tags are not deleted, but can be overwritten;
|
||
|
use "--tag-name-filter cat" to simply update the tags. In this
|
||
|
case, be very careful and make sure you have the old tags
|
||
|
backed up in case the conversion has run afoul.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Nearly proper rewriting of tag objects is supported. If the tag has
|
||
|
a message attached, a new tag object will be created with the same message,
|
||
|
author, and timestamp. If the tag has a signature attached, the
|
||
|
signature will be stripped. It is by definition impossible to preserve
|
||
|
signatures. The reason this is "nearly" proper, is because ideally if
|
||
|
the tag did not change (points to the same object, has the same name, etc.)
|
||
|
it should retain any signature. That is not the case, signatures will always
|
||
|
be removed, buyer beware. There is also no support for changing the
|
||
|
author or timestamp (or the tag message for that matter). Tags which point
|
||
|
to other tags will be rewritten to point to the underlying commit.</p>
|
||
|
</div>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--prune-empty</dt>
|
||
|
<dd>
|
||
|
<p>Some filters will generate empty commits that leave the tree untouched.
|
||
|
This option instructs git-filter-branch to remove such commits if they
|
||
|
have exactly one or zero non-pruned parents; merge commits will
|
||
|
therefore remain intact. This option cannot be used together with
|
||
|
<code>--commit-filter</code>, though the same effect can be achieved by using the
|
||
|
provided <code>git_commit_non_empty_tree</code> function in a commit filter.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--original <namespace></dt>
|
||
|
<dd>
|
||
|
<p>Use this option to set the namespace where the original commits
|
||
|
will be stored. The default value is <em>refs/original</em>.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">-d <directory></dt>
|
||
|
<dd>
|
||
|
<p>Use this option to set the path to the temporary directory used for
|
||
|
rewriting. When applying a tree filter, the command needs to
|
||
|
temporarily check out the tree to some directory, which may consume
|
||
|
considerable space in case of large projects. By default it
|
||
|
does this in the <em>.git-rewrite/</em> directory but you can override
|
||
|
that choice by this parameter.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">-f</dt>
|
||
|
<dt class="hdlist1">--force</dt>
|
||
|
<dd>
|
||
|
<p><em>git filter-branch</em> refuses to start with an existing temporary
|
||
|
directory or when there are already refs starting with
|
||
|
<em>refs/original/</em>, unless forced.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1">--state-branch <branch></dt>
|
||
|
<dd>
|
||
|
<p>This option will cause the mapping from old to new objects to
|
||
|
be loaded from named branch upon startup and saved as a new
|
||
|
commit to that branch upon exit, enabling incremental of large
|
||
|
trees. If <em><branch></em> does not exist it will be created.</p>
|
||
|
</dd>
|
||
|
<dt class="hdlist1"><rev-list options>…​</dt>
|
||
|
<dd>
|
||
|
<p>Arguments for <em>git rev-list</em>. All positive refs included by
|
||
|
these options are rewritten. You may also specify options
|
||
|
such as <code>--all</code>, but you must use <code>--</code> to separate them from
|
||
|
the <em>git filter-branch</em> options. Implies <a href="#Remap_to_ancestor">Remap to ancestor</a>.</p>
|
||
|
</dd>
|
||
|
</dl>
|
||
|
</div>
|
||
|
<div class="sect2">
|
||
|
<h3 id="Remap_to_ancestor">Remap to ancestor</h3>
|
||
|
<div class="paragraph">
|
||
|
<p>By using <a href="git-rev-list.html">git-rev-list</a>(1) arguments, e.g., path limiters, you can limit the
|
||
|
set of revisions which get rewritten. However, positive refs on the command
|
||
|
line are distinguished: we don’t let them be excluded by such limiters. For
|
||
|
this purpose, they are instead rewritten to point at the nearest ancestor that
|
||
|
was not excluded.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_exit_status">EXIT STATUS</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>On success, the exit status is <code>0</code>. If the filter can’t find any commits to
|
||
|
rewrite, the exit status is <code>2</code>. On any other error, the exit status may be
|
||
|
any other non-zero value.</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_examples">EXAMPLES</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>Suppose you want to remove a file (containing confidential information
|
||
|
or copyright violation) from all commits:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --tree-filter 'rm filename' HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>However, if the file is absent from the tree of some commit,
|
||
|
a simple <code>rm filename</code> will fail for that tree and commit.
|
||
|
Thus you may instead want to use <code>rm -f filename</code> as the script.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Using <code>--index-filter</code> with <em>git rm</em> yields a significantly faster
|
||
|
version. Like with using <code>rm filename</code>, <code>git rm --cached filename</code>
|
||
|
will fail if the file is absent from the tree of a commit. If you
|
||
|
want to "completely forget" a file, it does not matter when it entered
|
||
|
history, so we also add <code>--ignore-unmatch</code>:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --index-filter 'git rm --cached --ignore-unmatch filename' HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Now, you will get the rewritten history saved in HEAD.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To rewrite the repository to look as if <code>foodir/</code> had been its project
|
||
|
root, and discard all other history:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --subdirectory-filter foodir -- --all</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Thus you can, e.g., turn a library subdirectory into a repository of
|
||
|
its own. Note the <code>--</code> that separates <em>filter-branch</em> options from
|
||
|
revision options, and the <code>--all</code> to rewrite all branches and tags.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To set a commit (which typically is at the tip of another
|
||
|
history) to be the parent of the current initial commit, in
|
||
|
order to paste the other history behind the current history:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --parent-filter 'sed "s/^\$/-p <graft-id>/"' HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>(if the parent string is empty - which happens when we are dealing with
|
||
|
the initial commit - add graftcommit as a parent). Note that this assumes
|
||
|
history with a single root (that is, no merge without common ancestors
|
||
|
happened). If this is not the case, use:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --parent-filter \
|
||
|
'test $GIT_COMMIT = <commit-id> && echo "-p <graft-id>" || cat' HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>or even simpler:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git replace --graft $commit-id $graft-id
|
||
|
git filter-branch $graft-id..HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To remove commits authored by "Darl McBribe" from the history:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --commit-filter '
|
||
|
if [ "$GIT_AUTHOR_NAME" = "Darl McBribe" ];
|
||
|
then
|
||
|
skip_commit "$@";
|
||
|
else
|
||
|
git commit-tree "$@";
|
||
|
fi' HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The function <em>skip_commit</em> is defined as follows:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>skip_commit()
|
||
|
{
|
||
|
shift;
|
||
|
while [ -n "$1" ];
|
||
|
do
|
||
|
shift;
|
||
|
map "$1";
|
||
|
shift;
|
||
|
done;
|
||
|
}</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The shift magic first throws away the tree id and then the -p
|
||
|
parameters. Note that this handles merges properly! In case Darl
|
||
|
committed a merge between P1 and P2, it will be propagated properly
|
||
|
and all children of the merge will become merge commits with P1,P2
|
||
|
as their parents instead of the merge commit.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p><strong>NOTE</strong> the changes introduced by the commits, and which are not reverted
|
||
|
by subsequent commits, will still be in the rewritten branch. If you want
|
||
|
to throw out <em>changes</em> together with the commits, you should use the
|
||
|
interactive mode of <em>git rebase</em>.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>You can rewrite the commit log messages using <code>--msg-filter</code>. For
|
||
|
example, <em>git svn-id</em> strings in a repository created by <em>git svn</em> can
|
||
|
be removed this way:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --msg-filter '
|
||
|
sed -e "/^git-svn-id:/d"
|
||
|
'</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If you need to add <em>Acked-by</em> lines to, say, the last 10 commits (none
|
||
|
of which is a merge), use this command:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --msg-filter '
|
||
|
cat &&
|
||
|
echo "Acked-by: Bugs Bunny <bunny@bugzilla.org>"
|
||
|
' HEAD~10..HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>The <code>--env-filter</code> option can be used to modify committer and/or author
|
||
|
identity. For example, if you found out that your commits have the wrong
|
||
|
identity due to a misconfigured user.email, you can make a correction,
|
||
|
before publishing the project, like this:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --env-filter '
|
||
|
if test "$GIT_AUTHOR_EMAIL" = "root@localhost"
|
||
|
then
|
||
|
GIT_AUTHOR_EMAIL=john@example.com
|
||
|
fi
|
||
|
if test "$GIT_COMMITTER_EMAIL" = "root@localhost"
|
||
|
then
|
||
|
GIT_COMMITTER_EMAIL=john@example.com
|
||
|
fi
|
||
|
' -- --all</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To restrict rewriting to only part of the history, specify a revision
|
||
|
range in addition to the new branch name. The new branch name will
|
||
|
point to the top-most revision that a <em>git rev-list</em> of this range
|
||
|
will print.</p>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Consider this history:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre> D--E--F--G--H
|
||
|
/ /
|
||
|
A--B-----C</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To rewrite only commits D,E,F,G,H, but leave A, B and C alone, use:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch ... C..H</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To rewrite commits E,F,G,H, use one of these:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch ... C..H --not D
|
||
|
git filter-branch ... D..H --not C</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>To move the whole tree into a subdirectory, or remove it from there:</p>
|
||
|
</div>
|
||
|
<div class="listingblock">
|
||
|
<div class="content">
|
||
|
<pre>git filter-branch --index-filter \
|
||
|
'git ls-files -s | sed "s-\t\"*-&newsubdir/-" |
|
||
|
GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
|
||
|
git update-index --index-info &&
|
||
|
mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"' HEAD</pre>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_checklist_for_shrinking_a_repository">CHECKLIST FOR SHRINKING A REPOSITORY</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>git-filter-branch can be used to get rid of a subset of files,
|
||
|
usually with some combination of <code>--index-filter</code> and
|
||
|
<code>--subdirectory-filter</code>. People expect the resulting repository to
|
||
|
be smaller than the original, but you need a few more steps to
|
||
|
actually make it smaller, because Git tries hard not to lose your
|
||
|
objects until you tell it to. First make sure that:</p>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p>You really removed all variants of a filename, if a blob was moved
|
||
|
over its lifetime. <code>git log --name-only --follow --all -- filename</code>
|
||
|
can help you find renames.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>You really filtered all refs: use <code>--tag-name-filter cat -- --all</code>
|
||
|
when calling git-filter-branch.</p>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>Then there are two ways to get a smaller repository. A safer way is
|
||
|
to clone, that keeps your original intact.</p>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p>Clone it with <code>git clone file:///path/to/repo</code>. The clone
|
||
|
will not have the removed objects. See <a href="git-clone.html">git-clone</a>(1). (Note
|
||
|
that cloning with a plain path just hardlinks everything!)</p>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
<div class="paragraph">
|
||
|
<p>If you really don’t want to clone it, for whatever reasons, check the
|
||
|
following points instead (in this order). This is a very destructive
|
||
|
approach, so <strong>make a backup</strong> or go back to cloning it. You have been
|
||
|
warned.</p>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p>Remove the original refs backed up by git-filter-branch: say <code>git
|
||
|
for-each-ref --format="%(refname)" refs/original/ | xargs -n 1 git
|
||
|
update-ref -d</code>.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Expire all reflogs with <code>git reflog expire --expire=now --all</code>.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>Garbage collect all unreferenced objects with <code>git gc --prune=now</code>
|
||
|
(or if your git-gc is not new enough to support arguments to
|
||
|
<code>--prune</code>, use <code>git repack -ad; git prune</code> instead).</p>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_notes">NOTES</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>git-filter-branch allows you to make complex shell-scripted rewrites
|
||
|
of your Git history, but you probably don’t need this flexibility if
|
||
|
you’re simply <em>removing unwanted data</em> like large files or passwords.
|
||
|
For those operations you may want to consider
|
||
|
<a href="http://rtyley.github.io/bfg-repo-cleaner/">The BFG Repo-Cleaner</a>,
|
||
|
a JVM-based alternative to git-filter-branch, typically at least
|
||
|
10-50x faster for those use-cases, and with quite different
|
||
|
characteristics:</p>
|
||
|
</div>
|
||
|
<div class="ulist">
|
||
|
<ul>
|
||
|
<li>
|
||
|
<p>Any particular version of a file is cleaned exactly <em>once</em>. The BFG,
|
||
|
unlike git-filter-branch, does not give you the opportunity to
|
||
|
handle a file differently based on where or when it was committed
|
||
|
within your history. This constraint gives the core performance
|
||
|
benefit of The BFG, and is well-suited to the task of cleansing bad
|
||
|
data - you don’t care <em>where</em> the bad data is, you just want it
|
||
|
<em>gone</em>.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>By default The BFG takes full advantage of multi-core machines,
|
||
|
cleansing commit file-trees in parallel. git-filter-branch cleans
|
||
|
commits sequentially (i.e. in a single-threaded manner), though it
|
||
|
<em>is</em> possible to write filters that include their own parallelism,
|
||
|
in the scripts executed against each commit.</p>
|
||
|
</li>
|
||
|
<li>
|
||
|
<p>The <a href="http://rtyley.github.io/bfg-repo-cleaner/#examples">command options</a>
|
||
|
are much more restrictive than git-filter branch, and dedicated just
|
||
|
to the tasks of removing unwanted data- e.g:
|
||
|
<code>--strip-blobs-bigger-than 1M</code>.</p>
|
||
|
</li>
|
||
|
</ul>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div class="sect1">
|
||
|
<h2 id="_git">GIT</h2>
|
||
|
<div class="sectionbody">
|
||
|
<div class="paragraph">
|
||
|
<p>Part of the <a href="git.html">git</a>(1) suite</p>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
</div>
|
||
|
<div id="footer">
|
||
|
<div id="footer-text">
|
||
|
Last updated 2019-02-26 19:31:11 UTC
|
||
|
</div>
|
||
|
</div>
|
||
|
</body>
|
||
|
</html>
|