lw@lw-ThinkPad-T420:~/compression-algs$ huffman --help
Usage:
  huffman [OPTION...] - command line options

  -c, --compress    Compress file
  -e, --expand      Expand compressed file
  -s, --static      Use static huffman coding
  -a, --adaptive    Use adaptive huffman coding
  -i, --input arg   Input file
  -o, --output arg  Output file (default:Processed.out)
  -h, --help        Print help