.\"     Title: grepdiff
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.74.0 <http://docbook.sf.net/>
.\"      Date: 23 Jan 2009
.\"    Manual: Man pages
.\"    Source: patchutils
.\"  Language: English
.\"
.TH "GREPDIFF" "1" "23 Jan 2009" "patchutils" "Man pages"
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.tr aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ
\\$*
.tr aabbccddeeffgghhiijjkkllmmnnooppqqrrssttuuvvwwxxyyzz
..
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.\" -----------------------------------------------------------------
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.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "Name"
grepdiff \- show files modified by a diff containing a regex
.SH "Synopsis"
.fam C
.HP \w'\fBgrepdiff\fR\ 'u
\fBgrepdiff\fR [[\-n] | [\-\-line\-number]] [\-\-number\-files] [[\-p\ \fIn\fR] | [\-\-strip\-match=\fIn\fR]] [\-\-strip=\fIn\fR] [\-\-addprefix=\fIPREFIX\fR] [[\-s] | [\-\-status]] [[\-i\ \fIPATTERN\fR] | [\-\-include=\fIPATTERN\fR]] [[\-x\ \fIPATTERN\fR] | [\-\-exclude=\fIPATTERN\fR]] [[\-v] | [\-\-verbose]] [[\-E] | [\-\-extended\-regexp]] [[\-H] | [\-\-with\-filename]] [[\-h] | [\-\-no\-filename]] [\-\-output\-matching=\fIWHAT\fR] {[\fIREGEX\fR] | [\-f\ \fIFILE\fR]} [\fIfile\fR...]
.fam
.fam C
.HP \w'\fBgrepdiff\fR\ 'u
\fBgrepdiff\fR {[\-\-help] | [\-\-version] | [\-\-list] | [\-\-filter\ \&.\&.\&.]}
.fam
.SH "Description"
.PP
For each file modified by a patch, if the patch hunk contains the
\fIREGEX\fR
then the file\'s name is printed\&.
.PP
The regular expression is treated as POSIX Basic Regular Expression syntax, unless the
\fB\-E\fR
option is given in which case POSIX Extended Regular Expression syntax is used\&.
.PP
For example, to see the patches in
\FCmy\&.patch\F[]
which contain the regular expression
\(lqpf_gfp_mask\(rq, use:
.sp
.if n \{\
.RS 4
.\}
.fam C
.ps -1
.nf
.BB lightgray
grepdiff pf_gfp_mask my\&.patch | \e
  xargs \-rn1 filterdiff my\&.patch \-i
.EB lightgray
.fi
.fam
.ps +1
.if n \{\
.RE
.\}
.PP
You can use both unified and context format diffs with this program\&.
.SH "Options"
.PP
\fB\-n\fR, \fB\-\-line\-number\fR
.RS 4
Display the line number that each patch begins at\&. If verbose output is requested, each matching hunk is listed as well\&.
.sp
For a description of the output format see
\fBlsdiff\fR(1)\&.
.RE
.PP
\fB\-\-number\-files\fR
.RS 4
File numbers are listed, beginning at 1, before each filename\&.
.RE
.PP
\fB\-p\fR \fIn\fR, \fB\-\-strip\-match=\fR\fB\fIn\fR\fR
.RS 4
When matching, ignore the first
\fIn\fR
components of the pathname\&.
.RE
.PP
\fB\-\-strip\fR=\fIn\fR
.RS 4
Remove the first
\fIn\fR
components of the pathname before displaying it\&.
.RE
.PP
\fB\-\-addprefix\fR=\fIPREFIX\fR
.RS 4
Prefix the pathname with
\fIPREFIX\fR
before displaying it\&.
.RE
.PP
\fB\-s\fR
.RS 4
Show file additions, modifications and removals\&. A file addition is indicated by a
\(lq+\(rq, a removal by a
\(lq\-\(rq, and a modification by a
\(lq!\(rq\&.
.RE
.PP
\fB\-i\fR \fIPATTERN\fR, \fB\-\-include=\fR\fB\fIPATTERN\fR\fR
.RS 4
Include only files matching
\fIPATTERN\fR\&.
.RE
.PP
\fB\-x\fR \fIPATTERN\fR \fB\-\-exclude=\fR\fB\fIPATTERN\fR\fR
.RS 4
Exclude files matching
\fIPATTERN\fR\&.
.RE
.PP
\fB\-E\fR, \fB\-\-extended\-regexp\fR
.RS 4
Use POSIX Extended Regular Expression syntax\&.
.RE
.PP
\fB\-H\fR, \fB\-\-with\-filename\fR
.RS 4
Print the name of the patch file containing each match\&.
.RE
.PP
\fB\-h\fR, \fB\-\-no\-filename\fR
.RS 4
Suppress the name of the patch file containing each match\&.
.RE
.PP
\fB\-f\fR \fIFILE\fR, \fB\-\-file=\fR\fB\fIFILE\fR\fR
.RS 4
Read regular expressions from
\fIFILE\fR, one per line\&.
.RE
.PP
\fB\-\-output\-matching\fR=hunk|file
.RS 4
Display the matching hunk\-level or file\-level diffs\&.
.RE
.PP
\fB\-\-help\fR
.RS 4
Display a short usage message\&.
.RE
.PP
\fB\-\-version\fR
.RS 4
Display the version number of grepdiff\&.
.RE
.PP
\fB\-\-filter\fR
.RS 4
Behave like
\fBfilterdiff\fR(1)
instead\&.
.RE
.PP
\fB\-\-list\fR
.RS 4
Behave like
\fBlsdiff\fR(1)
instead\&.
.RE
.SH "See also"
.PP
\fBfilterdiff\fR(1),
\fBlsdiff\fR(1)
.SH "Author"
.PP
\fBTim Waugh\fR <\&twaugh@redhat.com\&>
.RS 4
Package maintainer
.RE