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Tutorial8: Links / Process Management

3 bytes added, 15:24, 6 March 2021
INVESTIGATION 2: MANAGING PROCESSES
# Issue the '''jobs''' command (you may have to issue the ''jobs'' command several times to get final result).<br> What do you notice?<br><br>[[Image:process-jobs5.png|thumb|right|300px|Using round brackets to '''group''' a series of commands to be run as '''one process'''.]]
# Let's use '''grouping''' to run several commands in sequence within a single process.<br><br>
# Issue the following Linux command: <br><span style="color:blue;font-family:courier;font-weight:bold">(sleep 400; sleep 500; sleep 600) &</span><br><br>
# Issue the '''jobs''' command. What do you notice?<br>You should notice all commands are run in a group as just one process.<br><br>
# Issue the following Linux command to terminate the first job running in the '''background''':<br><span style="color:blue;font-family:courier;font-weight:bold">kill %1</span><br><br>NOTE: If issuing the kill command does not work, then you would need to send a STRONGER signal<br>to "'''kill'''" (not "''SIGTERM'' - which is signal ''#15''") the process. The '''SIGKILL''' signal (signal '''#9''')<br>would be required to do this by issuing the '''kill''' command with the option: '''-9'''.<br><br>
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