$ bgrep --help
Usage: bgrep [OPTION...] PATTERN [FILE...]
  or:  bgrep [OPTION...] --hex-pattern=PATTERN [FILE...]
  or:  bgrep [OPTION...] -x PATTERN [FILE...]
Search for a byte PATTERN in each FILE or standard input

  -b, --byte-offset          show byte offsets; disables xxd output mode
  -c, --count                print a match count for each file; disables xxd
                             output mode
  -l, --files-with-matches   print the names of files containing matches;
                             implies 'first-only'; disables xxd output mode
  -q, --quiet                suppress all normal output; implies 'first-only'
  -F, --first-only           stop searching after the first match in each file
  -H, --with-filename        show filenames when reporting matches
  -r, --recursive            descend recursively into directories
  -A, --after-context=BYTES  print BYTES of context after each match if
                             possible (xxd output mode only)
  -B, --before-context=BYTES print BYTES of context before each match if
                             possible (xxd output mode only)
  -C, --context=BYTES        print BYTES of context before and after each match
                             if possible (xxd output mode only)
  -s, --skip=BYTES           skip or seek BYTES forward before searching
  -x, --hex-pattern=PATTERN  use PATTERN for matching
  -?, --help                 give this help list
      --usage                give a short usage message
  -V, --version              print program version

Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.

 PATTERN may consist of the following elements:
    hex byte values:                '666f6f 62 61 72'
    quoted strings:                 '"foobar"'
    wildcard bytes:                 '??'
    groupings:                      '(66 6f 6f)'
    repeated bytes/strings/groups:  '(666f6f)*3'
    escaped quotes in strings:      '"\"quoted\""'
    any combinations thereof:       '(("foo"*3 ??)*1k ff "bar") * 2'

 More examples:
    'ffeedd??cc'            Matches bytes 0xff, 0xee, 0xdd, <any byte>, 0xcc
    '"foo"'                 Matches bytes 0x66, 0x6f, 0x6f
    '"foo"00"bar"'          Matches "foo", a null character, then "bar"
    '"foo"??"bar"'          Matches "foo", then any byte, then "bar"
    '"foo"??*10"bar"'       Matches "foo", then exactly 10 bytes, then "bar"

 BYTES and REPEAT may be followed by the following multiplicative suffixes:
   c =1, w =2, b =512, kB =1000, K =1024, MB =1000*1000, M =1024*1024, xM =M
   GB =1000*1000*1000, G =1024*1024*1024, and so on for T, P, E, Z, Y.

 FILE can be a path to a file or '-', which means 'standard input'

Report bugs to <https://github.com/rsharo/bgrep/issues>.