Run a command with modified scheduling priority, print or modify the scheduling priority of a job.
nice [Option]… [Command [Arg]…]
Priority can be adjusted by &qt;nice&qt;&qt; over the range
of -20 (the highest priority)
to 19 (the lowest)If no arguments are given, &qt;nice&qt;&qt; prints the current scheduling priority, which it inherited.
Otherwise, &qt;nice&qt;&qt; runs the given Command with its scheduling priority adjusted.
If no option for MyADJUSTMENT is given, the priority of the command is incremented by 10. You must have appropriate privileges to specify a negative adjustment.
Because most shells have a built-in command by the same name, using the unadorned command name in a script or interactively may get you different functionality than that described here.