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(11) Job Control

Job/Process Control

UNIX is preemptive multi-tasking, can do many things at once(ps -elf or ps -alf)
Users can run multiple jobs/process; run slow ones in the background, suspend jobs till later, etc.
command & - Will place a job in the background
You can place a job running in your shell in the background by suspending it (^Z) and then backgrounding it (bg)

^Z: Suspend current job
bg: Put suspended job in background
fg: Make background job run in the shell
kill #: Kills a job with given process id, (ps -elf | grep unix10 | more)
renice: Lets a job run at a lower priority level
at time: Runs a job at a given time, UNIX also has "cron" jobs which run on a regular schedule

slide11.src last modified Feb 8, 2011

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