nice [OPTION] [COMMAND [ARG]...]
Run COMMAND with an adjusted niceness, which affects process schedul-
ing. With no COMMAND, print the current niceness. Nicenesses range
from -20 (most favorable scheduling) to 19 (least favorable).
-n, --adjustment=N
add integer N to the niceness (default 10)
--help display this help and exit
--version
output version information and exit
NOTE: your shell may have its own version of nice, which usually super-
sedes the version described here. Please refer to your shell’s docu-
mentation for details about the options it supports.