09-28-2001
kill -9 is king of harsh here... I have success using the HUP (signal 1) kill spec. So you're actually sending the Hang Up signal to all of their processes, which let them all exit gracefully. Anything left running after that is usually killable with a regular kill command (I think it defaults to signal 15, SIGTERM).
I have a script that will kill a user by sending the HUP signal, sleep for a few seconds, send a little bit stronger of a signal, sleep, then finally send any hung processes the -9 SIGKILL signal.
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kill(1) General Commands Manual kill(1)
Name
kill - send a signal to a process
Syntax
kill [-sig] processid...
kill -l
Description
The command sends the TERM (terminate, 15) signal to the specified processes. If a signal name or number preceded by `-' is given as first
argument, that signal is sent instead of terminate. For further information, see
The terminate signal kills processes that do not catch the signal; `kill -9 ...' is a sure kill, as the KILL (9) signal cannot be caught.
By convention, if process number 0 is specified, all members in the process group (that is, processes resulting from the current login) are
signaled. This works only if you use and not if you use To kill a process it must either belong to you or you must be superuser.
The process number of an asynchronous process started with `&' is reported by the shell. Process numbers can also be found by using It
allows job specifiers ``%...'' so process ID's are not as often used as arguments. See for details.
Options
-l Lists signal names. The signal names are listed by `kill -l', and are as given in /usr/include/signal.h, stripped of the common SIG
prefix.
See Also
csh(1), ps(1), kill(2), sigvec(2)
kill(1)