cliffb@isavax.isa.com (cliff bedore*) (05/29/90)
I'm having a problem with a csh program that I wrote to log out idle users.
I originally wrote it as something of an exercise in learning to program in
"csh" but it seemed useful and it worked so we use it here. However, I'm
having a problem getting it to work in one of our systems. I've enclosed
the program below and those who would like to use it may feal free to do so.
It is run from cron every ten minutes and at least on our one system works
fine. However it does not work at all under a second "identical" system.
Background. MVII Ultrix 3.0 both machines 1 BA123 1 BA23, rd53's.
Program invoked from cron on both machines.
Symptoms are: on machine where it doesn't work, it seems to stop at the line
in the inner loop where it says "set proc=($proct)". (Many debug statements
show it not getting past this point.) All of these problems show up when
run from cron. When run as root (or su) it runs fine. When I kill cron and
invoke cron as root, it works fine but when it is invoked from cron that
started at boot it won't work. I've checked file permissions for
cron,vmunix etc etc and I can't find anything different. I'm stumped and
looking for ideas. It's probably something stupid but I can't find it.
Any ideas???
Cliff
Here's the program (with debug statements)
#! /bin/csh -f
# Copyright 1989 Clifford J. Bedore
#set path=(/usr/local /bin /usr/ucb /usr/bin)
set path=(/usr/ucb /bin /usr/bin /etc /usr/etc /usr/local /usr/new /usr/hosts)
setenv PATH /usr/ucb:/bin:/usr/bin:/etc:/usr/etc:/usr/local:/usr/new:/usr/hosts
echo " " >> /usr/tech/cliffb/idle_log
echo "************************************" >> /usr/tech/cliffb/idle_log
echo `date` >> /usr/tech/cliffb/idle_log
echo `whoami` >> /usr/tech/cliffb/idle_log
echo $path>> /usr/tech/cliffb/idle_log
foreach usert ("`w -h |grep 'm ....[0-9]' |cut -c1-9,10-17,30-31`")
set user=($usert)
if ($1 == "debug") then
echo $user >> /usr/tech/cliffb/idle_log
endif
set time=$user[3]
if ($time <30 ) then
# do warning
if ($time >= 10) then
@ remain = $time % 10
@ temptime = 30 - $time
@ outtime = $temptime + $remain
echo "`date`" >/dev/$user[2]
echo " you have been idle for $time minutes
echo " you will be logged off in approx $outtime minutes
if ($1 == "debug") then
echo " warning $user" >> /usr/tech/cliffb/idle_log
echo " you have been idle for $time minutes
echo " you will be logged off in approx $outtime minutes
endif
endif
else #do logout
set portno=`echo $user[2] |cut -c4-5`
if ($1 == "debug") then
echo "new port $portno">> /usr/tech/cliffb/idle_log
endif
if ($portno == "so") then
set portno="co"
set user=($user[1] "co" $user[3])
if ($1 == "debug") then
echo "new $user ">> /usr/tech/cliffb/idle_log
endif
endif
echo "just before foreach $user ">> /usr/tech/cliffb/idle_log
foreach proct ("`ps -aux |grep $user[1]|cut -c1-9,10-15,36-37`")
echo "just after foreach $user proc $proct">> /usr/tech/cliffb/idle_log
set proc=($proct)
echo "just after set proc $user ">> /usr/tech/cliffb/idle_log
if ($1 == "debug") then
echo $proc>> /usr/tech/cliffb/idle_log
echo $proc[3] $portno>> /usr/tech/cliffb/idle_log
endif
echo "just after debug proc $user ">> /usr/tech/cliffb/idle_log
if ( $proc[3] == $portno ) then
kill -15 $proc[2]
kill -9 $proc[2]
if ($1 == "debug") then
echo "$proc[2] was killed">> /usr/tech/cliffb/idle_log
endif
endif
end
echo $user[1]" was logged out on `date` " >> /usr/spool/mqueue/kill_log
echo $user[1]" was logged out on `date` " >> /usr/tech/cliffb/idle_log
endif
endstefan@wheaton.UUCP (Stefan Brandle ) (05/30/90)
In article <1990May29.132532.15379@isavax.isa.com> cliffb@isavax.isa.com (cliff bedore*) writes: >I'm having a problem with a csh program that I wrote to log out idle users. >... All of these problems show up when >run from cron. When run as root (or su) it runs fine. When I kill cron and >invoke cron as root, it works fine but when it is invoked from cron that How do you call it from cron? I have this idea that cron runs `sh' by default, so you might need to do something like 10 * * * * /bin/csh your_program Otherwise cron might be trying to run it from the Bourne shell. (Since the Bourne shell doesn't look at the `#!/bin/csh', that doesn't help you). So maybe you are running it differently from cron on the two different machines? Hope this helps... -Stefan -- ---------------------------------------------- MA Bell: (708) 260-4110 --------- Stefan Brandle UUCP: ...!{obdient,uunet!tellab5}!wheaton!stefan Wheaton College or stefan@wheaton.UUCP Wheaton, IL 60187 "But I never claimed to be sane!"