schduling error

aarsh · 05-04-2010, 02:42 AM

i wanna simply schedule a script's execution at specified time :
so I used :
admin@linux-fw4q:~> at 01:09PM May 4

but the output was following ..

warning: commands will be executed using /bin/sh
at> ./a.out
at> <EOT>
job 3 at 2010-05-04 13:09
Can't open /var/run/atd.pid to signal atd. No atd running? < --- why so ?
admin@linux-fw4q:~> ^CCan't open /var/run/atd.pid to signal atd. No atd running?

aarsh · 05-04-2010, 03:04 AM

I want to schedule a script to run at a specifi time:
located at :

So, I used command as below and got error :

# at -f ScheduleDownload.sh -v 1:27
Wed May 5 01:27:00 2010

warning: commands will be executed using /bin/sh
job 6 at 2010-05-05 01:27
Can't open /var/run/atd.pid to signal atd. No atd running?

WHERE IS MY MISTAKE ??

colucix · 05-04-2010, 03:22 AM

It means the at daemon is not running. Indeed OpenSuSE does not enable it by default. You can either a) run the at daemon for this specific task by issuing (as root)

Code:

/etc/init.d/atd start

then don't forget to stop it after completing your job:

Code:

/etc/init.d/atd stop

b) use crontab if applicable. The only advantage of at versus cron is that it retains your current login environment, whereas cron has a very limited one. There are methods to workaround these limitations anyway.