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Shell Programming and Scripting
simple script
Post 302263116 by rajivn786 on Sunday 30th of November 2008 09:02:38 PM
11-30-2008
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LEARN ABOUT OPENDARWIN
nice
NICE(1) BSD General Commands Manual NICE(1) NAME
nice -- execute a utility at an altered scheduling priority SYNOPSIS
nice [-n increment] utility [argument ...] DESCRIPTION
The nice utility runs utility at an altered scheduling priority, by incrementing its ``nice'' value by the specified increment, or a default value of 10. The lower the nice value of a process, the higher its scheduling priority. The superuser may specify a negative increment in order to run a utility with a higher scheduling priority. Some shells may provide a builtin nice command which is similar or identical to this utility. Consult the builtin(1) manual page. ENVIRONMENT
The PATH environment variable is used to locate the requested utility if the name contains no '/' characters. EXAMPLES
Execute utility 'date' at priority 5 assuming the priority of the shell is 0: nice -n 5 date Execute utility 'date' at priority -19 assuming the priority of the shell is 0 and you are the super-user: nice -n 16 nice -n -35 date DIAGNOSTICS
If utility is invoked, the exit status of nice is the exit status of utility. An exit status of 126 indicates utility was found, but could not be executed. An exit status of 127 indicates utility could not be found. SEE ALSO
builtin(1), csh(1), idprio(1), rtprio(1), getpriority(2), setpriority(2), renice(8) COMPATIBILITY
The traditional -increment option has been deprecated but is still supported. STANDARDS
The nice utility conforms to IEEE Std 1003.1-2001 (``POSIX.1''). HISTORY
A nice utility appeared in Version 4 AT&T UNIX. BSD
June 6, 1993 BSD