NAME

       grepdiff - show files modified by a diff containing a regex

SYNOPSIS

       grepdiff [[-n] | [--line-number]] [[-N] | [--number-files]] [[-p n] | [--strip-match=n]]
                [--strip=n] [--addprefix=PREFIX] [--addoldprefix=PREFIX] [--addnewprefix=PREFIX]
                [[-s] | [--status]] [[-i PATTERN] | [--include=PATTERN]] [[-I FILE] |
                [--include-from-file=FILE]] [[-x PATTERN] | [--exclude=PATTERN]] [[-X FILE] |
                [--exclude-from-file=FILE]] [[-# RANGE] | [--hunks=RANGE]] [--lines=RANGE]
                [[-FRANGE] | [--files=RANGE]] [--annotate] [--as-numbered-lines=WHEN]
                [--format=FORMAT] [--remove-timestamps] [[-v] | [--verbose]] [[-z] |
                [--decompress]] [[-E] | [--extended-regexp]] [[-H] | [--with-filename]] [[-h] |
                [--no-filename]] [--output-matching=WHAT] {[REGEX] | [-f FILE]} [file...]

       grepdiff {[--help] | [--version] | [--list] | [--filter ...]}

DESCRIPTION

       For each file modified by a patch, if the patch hunk contains the REGEX then the file's
       name is printed.

       The regular expression is treated as POSIX Basic Regular Expression syntax, unless the -E
       option is given in which case POSIX Extended Regular Expression syntax is used.

       For example, to see the patches in my.patch which contain the regular expression
       “pf_gfp_mask”, use:

           grepdiff pf_gfp_mask my.patch | \
             xargs -rn1 filterdiff my.patch -i

       You can use both unified and context format diffs with this program.

OPTIONS

       -n, --line-number
           Display the line number that each patch begins at. If verbose output is requested,
           each matching hunk is listed as well.

           For a description of the output format see lsdiff(1).

       -N, --number-files
           File numbers are listed, beginning at 1, before each filename.

       -p n, --strip-match=n
           When matching, ignore the first n components of the pathname.

       --strip=n
           Remove the first n components of the pathname before displaying it.

       --addprefix=PREFIX
           Prefix the pathname with PREFIX before displaying it. This will override any
           individual settings specified with the --addoldprefix or --addnewprefix options.

       --addoldprefix=PREFIX
           Prefix pathnames for old or original files in the output by PREFIX.

       --addnewprefix=PREFIX
           Prefix pathnames for updated or new files in the output by PREFIX.

       -s
           Show file additions, modifications and removals. A file addition is indicated by a
           “+”, a removal by a “-”, and a modification by a “!”.

       -i PATTERN, --include=PATTERN
           Include only files matching PATTERN.

       -I FILE, --include-from-file=FILE
           Include only files matching any pattern listed in FILE, one pattern per line. All
           other lines in the input are suppressed.

       -x PATTERN --exclude=PATTERN
           Exclude files matching PATTERN.

       -X FILE, --exclude-from-file=FILE
           Exclude files matching any pattern listed in FILE, one pattern per line. All other
           lines in the input are displayed.

       -# RANGE, --hunks=RANGE
           Only include hunks within the specified RANGE. Hunks are numbered from 1, and the
           range is a comma-separated list of numbers or “first-last” spans, optionially
           preceeded by a modifier 'x' which inverts the entire range; either the first or the
           last in the span may be omitted to indicate no limit in that direction.

       --lines=RANGE
           Only list hunks that contain lines from the original file that lie within the
           specified RANGE. Lines are numbered from 1, and the range is a comma-separated list of
           numbers or “first-last” spans, optionially preceeded by a modifier 'x' which inverts
           the entire range; either the first or the last in the span may be omitted to indicate
           no limit in that direction.

       -F=RANGE, --files=RANGE
           Only list files indicated by the specified RANGE. Files are numbered from 1 in the
           order they appear in the patch input, and the range is a comma-separated list of
           numbers or “first-last” spans, optionially preceeded by a modifier 'x' which inverts
           the entire range; either the first or the last in the span may be omitted to indicate
           no limit in that direction.

       --annotate
           Annotate each hunk with the filename and hunk number.

       --as-numbered-lines=before|after
           Instead of a patch fragment, display the lines of the selected hunks with the line
           number of the file before (or after) the patch is applied, followed by a TAB character
           and a colon, at the beginning of each line. Each hunk except the first will have a
           line consisting of “...”  before it.

       --format=unified|context
           Use specified output format.

       --remove-timestamps
           Do not include file timestamps in the output.

       -z, --decompress
           Decompress files with extensions .gz and .bz2.

       -E, --extended-regexp
           Use POSIX Extended Regular Expression syntax.

       -H, --with-filename
           Print the name of the patch file containing each match.

       -h, --no-filename
           Suppress the name of the patch file containing each match.

       -f FILE, --file=FILE
           Read regular expressions from FILE, one per line.

       --output-matching=hunk|file
           Display the matching hunk-level or file-level diffs.

       --help
           Display a short usage message.

       --version
           Display the version number of grepdiff.

       --filter
           Behave like filterdiff(1) instead.

       --list
           Behave like lsdiff(1) instead.

SEE ALSO

       filterdiff(1), lsdiff(1)

AUTHOR

       Tim Waugh <twaugh@redhat.com>
           Package maintainer