How to list currently running batch jobs

[Richard Mertz]

Can I list currently running jobs that were initiated via the batch command?

eg. Scriptfile testit:
---
while true
do
sleep 77
done
---
Run script with:
batch
at -l does not list running job. Is there a way to list it?

[Frank Slootweg]

I do not know of a simple method.

I think the only thing you can do is extract and process these kind of entries from /var/adm/cron/log:

Start:

> CMD: 1042193129.b
> franks 8815 b Fri Jan 10 11:05:29 MET 2003
[...]

End:
< franks 8815 b Fri Jan 10 11:08:02 MET 2003

[Chris Wilshaw]

Have you tried

at -l -qb

This tells is to use queue b, which should be those submitted via batch

[U.SivaKumar_2]

Hi,

Try this.

#ps -ef | grep sleep

will show you whether your job is running or not.

regards,
U.SivaKumar

[Armin Feller]

Hi,

I'm in mind with Frank. I found following documentation:

--- snip ---
Going through the source for at and cron and also looking at the manuals I found out the at jobs are place in /usr/spool/cron/atjobs (cronjobs for cron). Then cron monitors the entries and executes the jobs at appropriate time. The user can look at /usr/lib/cron/log file to monitor the log file and get process IDs. The log file keeps growing until the system is rebooted.
--- snap ---

Regards ...
Armin

[Chris Wilshaw · Accepted solution]

There is another way.

Find out the PID of your cron, and run a

ps -ef | grep

As cron is the parent process of the batch jobs, this should display them.

[Richard Mertz]

Since the script produces no output, there is nothing stored in any of the suggested directories. at -l -qb does not display anything. The only thing that seems to be available is to ps -ef|grep /usr/sbin/cron,
grab the pid for cron and do a ps -ef for that pid which will show the processes that have been spawned by cron.

[Carlos Fernandez Riera]

From /sbin/init.d/cron

'stop')
#
# Determine PID of process(es) to stop
#
pid=`ps -el | awk '( ($NF ~ /cron/) && ($4 != mypid) && ($5 != mypid) ){ print $4 }' mypid=$$ `
if [ "X$pid" != "X" ]; then
if kill $pid; then
echo "cron stopped"
else
set_return
echo "Unable to stop cron"
fi
fi
;;


A better solution could be:

ps -fg $pid will list all jobs started by any job started by cron.

[Pete Randall]

Since $pid doesn't exist, try:

ps -fg `ps -el | awk '( ($NF ~ /cron/) && ($4 != mypid) && ($5 !=mypid) ){ print $4 }' mypid=$$ `



Pete

[Carlos Fernandez Riera]

Pete:

pid=`ps .....

[Pete Randall]

Of course you're right, Carlos, but, since I didn't see pid being set up in your post, I was trying to make things clear.

Pete

[Carlos Fernandez Riera]

No problem Pete. I just copy it because:

1- The system check it this way.

2- what an an amazing syntax. Today is a good day too to learn somthing more.