08-25-2006
kill crashed out users
Hi all,
We have a problem where we get a fair few users either exiting incorrectly or crashing. I'm trying to get a script together that runs every hour to kill these processes off.
We are running Sco OperServer(TM) Release 5
The command we use to get a list of users who have crashed:
ps -ef | grep " 1" | grep "\-sh"
# ps -ef | grep " 1" | grep "\-sh" | cut -c10-15
root 2945 1 0 07:45:38 tty05 00:00:00 -sh
ben 7259 1 11 09:07:14 ttyp68 00:00:00 -sh
bill 8059 1 11 09:16:15 ttyp71 00:00:00 -sh
bob 8553 1 11 09:30:15 ttyp3 00:00:00 -sh
Obviouly to get the pid:
# ps -ef | grep " 1" | grep "\-sh" | cut -c10-15
2945
4184
5829
7259
8059
8553
The problem I have is the PID can be 4 or 5 numbers. Hence when the PID has 4 numbers their is a space before and cannot use kill $i in a for loop. Is their a better way of doing this or is their a way of stripping the space if their is one??
Thank
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LEARN ABOUT OPENDARWIN
kill
KILL(1) BSD General Commands Manual KILL(1)
NAME
kill -- terminate or signal a process
SYNOPSIS
kill [-s signal_name] pid ...
kill -l [exit_status]
kill -signal_name pid ...
kill -signal_number pid ...
DESCRIPTION
The kill utility sends a signal to the processes specified by the pid operand(s).
Only the super-user may send signals to other users' processes.
The options are as follows:
-s signal_name
A symbolic signal name specifying the signal to be sent instead of the default TERM.
-l [exit_status]
If no operand is given, list the signal names; otherwise, write the signal name corresponding to exit_status.
-signal_name
A symbolic signal name specifying the signal to be sent instead of the default TERM.
-signal_number
A non-negative decimal integer, specifying the signal to be sent instead of the default TERM.
The following pids have special meanings:
-1 If superuser, broadcast the signal to all processes; otherwise broadcast to all processes belonging to the user.
Some of the more commonly used signals:
1 HUP (hang up)
2 INT (interrupt)
3 QUIT (quit)
6 ABRT (abort)
9 KILL (non-catchable, non-ignorable kill)
14 ALRM (alarm clock)
15 TERM (software termination signal)
Some shells may provide a builtin kill command which is similar or identical to this utility. Consult the builtin(1) manual page.
SEE ALSO
builtin(1), csh(1), killall(1), ps(1), kill(2), sigaction(2)
STANDARDS
The kill function is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A kill command appeared in Version 6 AT&T UNIX.
BUGS
A replacement for the command ``kill 0'' for csh(1) users should be provided.
BSD
April 28, 1995 BSD