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Full Discussion: ps command
Top Forums UNIX for Dummies Questions & Answers ps command Post 302642775 by muffle on Friday 18th of May 2012 03:47:16 AM
Old 05-18-2012
ps command

What is the difference between ps -ax and ps -x? I got the meaning here but don't understand it clearly.

-a List information about all processes most frequently requested: all those except process group leaders and processes not associated with a terminal.

-x includes processes not attached to terminals

what are proccess group leaders and processes not associated with a terminal? processes not attached to terminals?

Can please someone explain this to me.
 

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killall(1M)															       killall(1M)

NAME
killall - kill all active processes SYNOPSIS
[signal] DESCRIPTION
is a procedure used by to kill all active processes not directly related to the shutdown procedure. is chiefly used to terminate all processes with open files so that the mounted file systems are no longer busy and can be unmounted. sends the specified signal to all user processes in the system, with the following exceptions: the process; all processes (including background processes) associated with the terminal from which was invoked; any process, if owned by any process, if owned by any process; any process; any process. obtains its process information from and therefore may not be able to perfectly identify which processes to signal (see ps(1)). If no signal is specified, a default of (kill) is used. is invoked automatically by The use of is recommended over using by itself (see shutdown(1M)). FILES
SEE ALSO
fuser(1M), kill(1), ps(1), shutdown(1M), signal(5). STANDARDS CONFORMANCE
killall(1M)
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