$ curl -fsSL -o ops https://github.com/ymgyt/ops/releases/download/v0.0.3/ops-linux-amd64-v0.0.3
$ chmod +x ops
$ ./ops version
v0.0.3

du print provided directory disk usage recursively.

USAGE
  ops du [OPTIONS] <root_directory>

Options
  -h, --help         : print this.
      --humanize     : humanize bytes. ex MB
  -i, --ibytes       : humanize ibytes. ex MiB
  -l, --level        : print directory level.
      --max-recursion: max recursion.
      --order        : output disk usaage order.
  -r, --relative     : print relative file path from root.
  -v, --verbose      : verbose

rand generate random characters.

USAGE
 ops rand [OPTIONS]

default character pool: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ123456789


Options
  -h, --help         : print this.
      --len          : random strings length.
      --special-chars: characters used in addition to the standard string pool for random string generation

ops rand --len=50 --special-chars='?!_-*.,&%'
XyACZMsL?tPJ_Vd8Yg93!EGoFpqOuRDHWV*jFP*r7u2OqIP4C_