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This is the BSDA Study Guide Book written via a wiki collaboration. This is a work in progress. You may contribute to or discuss this specific page at http://bsdwiki.reedmedia.net/wiki/View_and_send_signals_to_active_processes.html.
View and send signals to active processes
Be familiar with both the names and numbers of the most commonly used Unix signals and how to send a signal to an active process. Recognize the difference between a SIGTERM and a SIGKILL.
Section Determine which process are consuming the most CPU talks about processes, and how to list and manage them. This topic is covered in a bit more depth here, by listing other tools besides kill(1):
See section Determine which process are consuming the most CPU for examples on using ps(1) and kill(1). The following example achieves the same goal with the commands introduced here:
See section Determine which process are consuming the most CPU and perform the same tasks with pgrep(1) and pkill(1).
ps(1); kill(1); killall(1); pkill(1); pgrep(1)