grepdiff [-n] [--number-files] [-p n] [--strip=n] [--addprefix=PREFIX] [-s] [-i PATTERN] [-x PATTERN] [-v] [-E] [[-H] [--with-filename]] [[-h] [--no-filename]] [--output-matching=WHAT] {[REGEX] [-f FILE]} [file...]

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

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 lqpf_gfp_maskrq, 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.

-n

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).

--number-files

File numbers are listed, beginning at 1, before each filename.

-p 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.

-s

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.

-i PATTERN

Include only files matching PATTERN.

-x PATTERN

Exclude files matching PATTERN.

-E

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

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.

filterdiff(1), lsdiff(1)