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killing a process pid
Post 302098197 by matrixmadhan on Friday 1st of December 2006 08:01:26 AM
12-01-2006
I would say using kill -9 pid is not the better choice in most of the situations,
where the process intended to kill is poorly deprived of doing any sort of cleanup operations. Most of the programs would have implemented ( if not, that cannot be helped ) or rather registered signal handlers and that signals should only be delivered for a safe and clean kill possibly. SIGTERM should have been registered in most of the cases and it would be better to go with that instead of the merciless kill.
where the process intended to kill is poorly deprived of doing any sort of cleanup operations. Most of the programs would have implemented ( if not, that cannot be helped ) or rather registered signal handlers and that signals should only be delivered for a safe and clean kill possibly. SIGTERM should have been registered in most of the cases and it would be better to go with that instead of the merciless kill.
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LEARN ABOUT XFREE86
kill
KILL(1) User Commands KILL(1) NAME
kill - send a signal to a process SYNOPSIS
kill [options] <pid> [...] DESCRIPTION
The default signal for kill is TERM. Use -l or -L to list available signals. Particularly useful signals include HUP, INT, KILL, STOP, CONT, and 0. Alternate signals may be specified in three ways: -9, -SIGKILL or -KILL. Negative PID values may be used to choose whole process groups; see the PGID column in ps command output. A PID of -1 is special; it indicates all processes except the kill process itself and init. OPTIONS
<pid> [...] Send signal to every <pid> listed. -<signal> -s <signal> --signal <signal> Specify the signal to be sent. The signal can be specified by using name or number. The behavior of signals is explained in sig- nal(7) manual page. -l, --list [signal] List signal names. This option has optional argument, which will convert signal number to signal name, or other way round. -L, --table List signal names in a nice table. NOTES Your shell (command line interpreter) may have a built-in kill command. You may need to run the command described here as /bin/kill to solve the conflict. EXAMPLES
kill -9 -1 Kill all processes you can kill. kill -l 11 Translate number 11 into a signal name. kill -L List the available signal choices in a nice table. kill 123 543 2341 3453 Send the default signal, SIGTERM, to all those processes. SEE ALSO
kill(2), killall(1), nice(1), pkill(1), renice(1), signal(7), skill(1) STANDARDS
This command meets appropriate standards. The -L flag is Linux-specific. AUTHOR
Albert Cahalan <albert@users.sf.net> wrote kill in 1999 to replace a bsdutils one that was not standards compliant. The util-linux one might also work correctly. REPORTING BUGS
Please send bug reports to <procps@freelists.org> procps-ng October 2011 KILL(1)