nice(1) — USER COMMANDS
NAME
nice − run a command at low priority
SYNOPSIS
nice [ −increment ] command [ arguments ]
DESCRIPTION
nice executes command with a lower CPU scheduling priority. The priocntl command is a more general interface to scheduler functions.
The invoking process (generally the user’s shell) must be in the time-sharing scheduling class. The command is executed in the time-sharing class.
If the increment argument (in the range 1−19) is given, it is used; if not, an increment of 10 is assumed.
The super-user may run commands with priority higher than normal by using a negative increment, for example, −−10.
SEE ALSO
nohup(1), priocntl(1)
nice(2).
DIAGNOSTICS
nice returns the exit status of command.
NOTES
An increment larger than 19 is equivalent to 19.
— User Environment Utilities