# phpman > man > grepdiff(1) [GREPDIFF(1)](https://www.chedong.com/phpMan.php/man/GREPDIFF/1/markdown) Man pages [GREPDIFF(1)](https://www.chedong.com/phpMan.php/man/GREPDIFF/1/markdown) ## 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] [--only-match=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)](https://www.chedong.com/phpMan.php/man/lsdiff/1/markdown). ### -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, optionally preceded 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, optionally preceded 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, optionally preceded 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. --only-match=rem|removals|add|additions|mod|modifications|all Limit regex matching to removals, additions, modifications or the whole hunk. ### --help Display a short usage message. ### --version Display the version number of grepdiff. ### --filter Behave like [filterdiff(1)](https://www.chedong.com/phpMan.php/man/filterdiff/1/markdown) instead. ### --list Behave like [lsdiff(1)](https://www.chedong.com/phpMan.php/man/lsdiff/1/markdown) instead. ## SEE ALSO [filterdiff(1)](https://www.chedong.com/phpMan.php/man/filterdiff/1/markdown), [lsdiff(1)](https://www.chedong.com/phpMan.php/man/lsdiff/1/markdown), [patchview(1)](https://www.chedong.com/phpMan.php/man/patchview/1/markdown) ## AUTHOR Tim Waugh <> Package maintainer patchutils 10 Feb 2011 [GREPDIFF(1)](https://www.chedong.com/phpMan.php/man/GREPDIFF/1/markdown)