Scheduling cron

[Praveen Bezawada]

Hi
I want to schedule cron from a script, when I echo line into the crontabs file in /var/spool/cron/crontabs/ directory though the line is being displayed when the user does crontab -e
it does not get executed at the scheduled hour.
How should the scheduling be done.

.. praveen

[Wodisch]

Hello Praveen,

very bad idea to modify the crontabs in that directory
directly! Use "crontab FILE", and that will notify "cron",
perhaps with signal HUP. "FILE" would be the name of
your new crontable, including ALL the lines - old and
new.

Everything else is almost certain to fail!!!

HTH,
Wodisch

[Madhu Sudhan_1]

Praveen :

Try echoing into a temporary file including its previous contents then let the script have crontab /filename.

Madhu

[Madhu Sudhan_1]

Praveen :

If you want to go in the same path as yours. Then try restarting the cron. It should work.

...Madhu

[Andreas Voss]

Hi,

why not using

batch [startdate]

to schedule a job ?

See 'man batch'

Regards

[Satish Y]

Hi Praveen,

Try,

# crontab (file-name --> file in /var/spool/cron/crontabs directory or file with full path)

set variable CRON=1 in /etc/rc.config.d/cron

# /sbin/init.d/cron stop
# /sbin/init.d/cron start

Cheers...
Satish.

[Helen French]

You can automatically bring your own crontab into vi by using the crontab -e or just view it with crontab -l. When you do the -e option it should automatically notify cron to use the new file....

Anyone who knows this to be inccorect please correct me, I'm a newbie

Just the basics.

AJ