Using Priority Scheduling and Control
Two useful applications included with Ubuntu are the nice and renice commands. They are covered in Chapter 11, “Command-Line Master Class.” Along with nice, system administrators can also use the time command to get an idea of how much time and what proportion of a system’s resources are required for a task, such as a shell script. (Here, time is used to measure the duration of elapsed time; the command that deals with civil and sidereal time is the date command.) This command is used with the name of another command (or script) as an argument like this:
matthew@seymour:~$ sudo time -p find / -name conky/home/matthew/conky/etc/conky/usr/lib/conky/usr/bin/conkyreal 30.19user 1.09 ...
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