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.\"Generated by db2man.xsl. Don't modify this, modify the source.
.de Sh \" Subsection
.br
.if t .Sp
.ne 5
.PP
\fB\\$1\fR
.PP
..
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Ip \" List item
.br
.ie \\n(.$>=3 .ne \\$3
.el .ne 3
.IP "\\$1" \\$2
..
.TH "GREPDIFF" 1 "31 Jan 2002" "patchutils" ""
.SH NAME
grepdiff \- show files modified by a diff containing a regex
.SH "SYNOPSIS"
.nf
\fBgrepdiff\fR [-n] [-p \fIn\fR] [-s] [-i \fIPATTERN\fR] [-x \fIPATTERN\fR] {\fIREGEX\fR}
[\fIfile\fR...]
.fi
.nf
\fBgrepdiff\fR {--help | --version | --list | --filter ...}
.fi
.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.
.PP
For example, to see the patches in \fImy.patch\fR which contain the regular expression ``pf_gfp_mask'', use:
.IP
.nf
grepdiff pf_gfp_mask my.patch | \\
xargs -rn1 filterdiff my.patch -i
.fi
.PP
You can use both unified and context format diffs with this program.
.SH "OPTIONS"
.TP
\fB-n\fR
Display the line number that each patch begins at.
.TP
\fB-p\fR \fIn\fR
Strip the first \fIn\fR components of the pathname.
.TP
\fB-s\fR
Show file additions, modifications and removals. A file addition is indicated by a ``+'', a removal by a ``-'', and a modification by a ``!''.
.TP
\fB-i\fR \fIPATTERN\fR
Include only files matching \fIPATTERN\fR.
.TP
\fB-x\fR \fIPATTERN\fR
Exclude files matching \fIPATTERN\fR.
.TP
\fB--help\fR
Display a short usage message.
.TP
\fB--version\fR
Display the version number of grepdiff.
.TP
\fB--filter\fR
Behave like \fBfilterdiff\fR(1) instead.
.TP
\fB--list\fR
Behave like \fBlsdiff\fR(1) instead.
.SH "SEE ALSO"
.PP
\fBfilterdiff\fR(1), \fBlsdiff\fR(1)
.SH AUTHOR
Tim Waugh <twaugh@redhat.com>.
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