/usr/bin/grepdiff

usage: grepdiff [OPTION]... REGEX [files ...]
Options:
  -x PAT, --exclude=PAT
            exclude files matching PAT
  -X FILE, --exclude-from-file=FILE
            exclude files that match any pattern in FILE
  -i PAT, --include=PAT
            include only files matching PAT
  -I FILE, --include-from-file=FILE
            include only files that match any pattern in FILE
  -# H, --hunks=H
            include only hunks in range H, if range begins with x show all excluding range H
  --lines=L include only hunks with (original) lines in range L, if range begins with x show all excluding range L
  -F F, --files=F
            include only files in range F, if range begins with x show all excluding range F
  --annotate
            annotate each hunk with the filename and hunk number
  --as-numbered-lines=before|after|original-before|original-after
            display lines as they would look before, or after, the patch is applied;
            or with original line numbers from the diff (original-before or original-after)
  --format=context|unified
            set output format
  --output-matching=hunk|file
            show matching hunks or file-level diffs
  --only-match=rem|removals|add|additions|mod|modifications|all
            regex will only match removals, additions, modifications or
            the whole hunk
  --remove-timestamps
            don't show timestamps from output
  -z, --decompress
            decompress .gz and .bz2 files
  -n, --line-number
            show line numbers
  -N, --number-files
            show file numbers, for use with filterdiff's --files option
  -H, --with-filename
            show patch file names
  -h, --no-filename
            suppress patch file names
  -p N, --strip-match=N
            initial pathname components to ignore
  --strip=N initial pathname components to strip
  --git-prefixes=strip|keep
            how to handle a/ and b/ prefixes in Git diffs for both filename
            matching (-i/-x) and output (default: keep)
  --git-extended-diffs=exclude|include
            process Git diffs without hunks: renames, copies, mode-only
            changes, binary files; default is exclude
  --addprefix=PREFIX
            prefix pathnames with PREFIX
  --addoldprefix=PREFIX
            prefix pathnames in old files with PREFIX
  --addnewprefix=PREFIX
            prefix pathnames in new files with PREFIX
  -s, --status
            show file additions (+), removals (-), and modifications (!)
  -v, --verbose
            verbose output -- use more than once for extra verbosity
  -E, --extended-regexp
            use extended regexps, like egrep
  --empty-files-as-absent
            treat empty files as absent
  -f FILE, --file=FILE
            read regular expressions from FILE
  --filter  run as 'filterdiff'
  --list    run as 'lsdiff'