Run COMMAND with an adjusted niceness, which affects process scheduling.
With no COMMAND, print the current niceness.  Niceness values range from
-20 (most favorable to the process) to 19 (least favorable to the process).

Usage: nice [OPTION] [COMMAND [ARG]...]

Arguments:
  [COMMAND]...

Options:
  -n, --adjustment <adjustment>  add N to the niceness (default is 10)
  -h, --help                     Print help
  -V, --version                  Print version