GREPDIFF

grepdiff − show files modified by a diff containing a regex

grepdiff [[−n] | [−−line−number]] [−−number−files] [[−p n] | [−−strip−match=n]] [−−strip=n] [−−addprefix=PREFIX] [[−s] | [−−status]] [[−i PATTERN] | [−−include=PATTERN]] [[−x PATTERN] | [−−exclude=PATTERN]] [[−v] | [−−verbose]] [[−E] | [−−extended−regexp]] [[−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 “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.

−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).

−−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.

−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.

−x PATTERN −−exclude=PATTERN

Exclude files matching PATTERN.

−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.

filterdiff(1), lsdiff(1)

Tim Waugh <twaugh@redhat.com>

Package maintainer