Usage: java gnu.regexp.util.Grep [OPTION]... PATTERN [FILE] ...
Search for PATTERN in each FILE or standard input.
Most options same as GNU grep.

Regexp selection and interpretation:
  -E, --extended-regexp     PATTERN is an extended regular expression
  -G, --basic-regexp        PATTERN is a basic regular expression
  -i, --ignore-case         ignore case distinctions
Unsupported (may be available in a future release):
  -e, --regexp=PATTERN      use PATTERN as a regular expression
  -f, --file=FILE           obtain PATTERN from FILE
  -F, --fixed-regexp        PATTERN is a fixed string separated by newlines
  -w, --word-regexp         force PATTERN to match only whole words
  -x, --line-regexp         force PATTERN to match only whole lines

Miscellaneous:
  -s, --no-messages         suppress error messages
  -v, --revert-match        select non-matching lines
  -N, --encoding	    use the specified file encoding
  -z, --zip		    expand ZIP files
  -V, --version             print version information and exit
      --help                display this help and exit

Output control:
  -b, --byte-offset         print the byte offset with output lines
  -n, --line-number         print line number with output lines
  -h, --no-filename         suppress the prefixing filename on output
  -q, --quiet, --silent     suppress all normal output
  -L, --files-without-match only print FILE names containing no match
  -l, --files-with-matches  only print FILE names containing matches
  -c, --count               only print a count of matching lines per FILE
Unsupported (may be available in a future release):
  -H, --with-filename       print the filename for each match

Context control:
Unsupported (may be available in a future release):
  -B, --before-context=NUM  print NUM lines of leading context
  -A, --after-context=NUM   print NUM lines of trailing context
  -NUM                      same as both -B NUM and -A NUM
  -C, --context             same as -2
  -U, --binary              do not strip CR characters at EOL (MSDOS)
  -u, --unix-byte-offsets   report offsets as if CRs were not there (MSDOS)

With no FILE, or when FILE is -, read standard input. If less than
two FILEs given, assume -h. Exit with 0 if matches, with 1 if none.
Exit with 2 if syntax errors or system errors.

Report bugs to <wes@cacas.org>.