Actually I found it on my dev box. The script is very specific to my needs, but
should give you an idea of how to clean up this kind of junk. True be told I
tossed it together as a temporary solution until a better method is needed or
found. I'm positive there are better methods of accomplishing this so feel free
to provide feedback. Hope it comes in handy.
Cory Oldford
# Make sure hc* logins are legit.
echo "Checking for undead logins"
terminal_users=`who | awk '/hc*/ { if ($2 == $1":0") { print $1 } }'`
for terminal_user in $terminal_users; do
if ! ping -q -c 1 $terminal_user &>/dev/null; then
echo "- Found undead login for $terminal_user."
echo -n "- - Resetting login status"
if sessreg -d -l $terminal_user:0 -x
/usr/X11R6/lib/xdm/Xservers $terminal_user &> /dev/null; then
echo " OK"
else
echo " FAILED"
fi
else
echo "- No undead logins found."
fi
done
# Make sure logged out hc* users have no leftover processes or mount points.
echo "Checking for undead processes and mounts"
valid_logins=`who | awk '/hc*/ { print $1 }'`
terminal_users=`ls /home | grep hc`
for terminal_user in $terminal_users; do
logged_in="false"
for valid_login in $valid_logins; do
if [ $valid_login = $terminal_user ]; then
logged_in="true"
fi
done
# Kill any undead mounts
if mount | grep $terminal_user &>/dev/null && [ $logged_in = "false" ];
then
echo "- Found an undead mount used by $terminal_user"
echo -n "- - Removing mount"
else
echo " FAILED"
fi
else
echo "- No undead mounts found for $terminal_user"
fi
if ps -u $terminal_user &> /dev/null && [ $logged_in = "false" ]; then
echo "- Found undead processes running as $terminal_user."
# Kill whatever processes we can.
for process in `ps -u $terminal_user | awk '!/PID/ { print $1
}'`; do
echo "- - Killing $process"
kill -9 $process 2> /dev/null
done
sleep 1 # Give the system a sec to kill the procs
# If that didn't do the job kill parents of defuncted processes.
if ps -u $terminal_user &> /dev/null; then
for process in `ps -fp $(pgrep -d, -u $terminal_user) |
awk '!/PID/ { print $3 }'`; do echo "- - Killing
parent $process"
kill -9 $process 2> /dev/null
done
fi
sleep 1 # Give the system a sec to kill the procs
# Make sure we did what needed to be done.
if ! ps -u $terminal_user &> /dev/null; then
echo "- - All undead processes have been killed for
user $terminal_user."
else
echo "- - FAILED: Could not kill all undead processes."
fi
else
echo "- No undead processes found for $terminal_user."
fi
done
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