NAME

nice, nohup − run a command at low priority (sh only)

SYNOPSIS

nice [ −number ] command [ arguments ]

nohup command [ arguments ]

DESCRIPTION

Nice executes command with low scheduling priority.  If the number argument is present, the priority is incremented by that amount up to a limit of 20 (higher numbers indicate lower priorities).  The default number is 10. 

The super-user may run commands with priority higher than normal by using a negative priority, (e.g., ‘−−10’). 

Nohup executes command immune to hangup and terminate signals from the controlling terminal.  The priority is incremented by 5.  Nohup should be invoked from the shell with ‘&’ in order to prevent it from responding to interrupts by or taking the input from the next person who logs in on the same terminal.  The syntax of nice also differs. 

FILES

nohup.outstandard output and standard error file under nohup

SEE ALSO

csh(1), nice(2), renice(8)

DIAGNOSTICS

Nice returns the exit status of the subject command. 

BUGS

Nice and nohup are particular to sh(1). If you use csh(1), commands executed with “&” are automatically immune to hangup signals while they are in the background. There is a built-in command, nohup, which provides immunity from terminate, but does not redirect output to nohup.out. 

Nice is built into csh(1) with a slightly different syntax than described here.  The form “nice +10” nices to positive nice, and “nice −10” can be used by the super-user to give a process more of the processor.

4th Berkeley Distribution  —  %W%%Q%%Y%