Problen in Cron job

[Nirbhay]

Hi All,
I am currently working on cron job it is not working properly.My requirement is that the script should run in every 30 min every day. for that I have written
30 * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php
it is not calling the script but when I am writing it like
* * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php then it is calling it every min.

can any one help me.Is there anything wrong in the way I am calling the script.

[abduraooft]

Try changing 30 * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php to
*/30 * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php

[Nirbhay]

Thanks for the response but still it is not working properly . :(

[Fou-Lu]

0,30 * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php

Moving from PHP to Apache configurations


btw, the */30 should have worked.

[clunk.werclick]

--dump dump the first file to stdout and exit
By any chance are you expecting the output to appear on screen? If so, it won't happen like this as the crontab has no idea what your screen is. You can try outputting to a virtual terminal like /dev/tty1 but if this will work I can't say.

You can prove the crontab works by dumping the output into a text file instead:

0,30 * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php >> /home/whatever/lynxtest.output

You can tail it - if that helps:
(tail -f /home/whatever/lynxtest.output)

[Nirbhay]

I am not expecting any output instead I am sending mail through the scripts.
for checking purpose I tried out with all *s and it was working fine means I was getting mails in each minute but after dividing the * by any number say 30 it is not calling the script as it seems because I am not getting any mail.

[Nirbhay]

I am not expecting any output instead I am sending mail through the scripts.
for checking purpose I tried out with all *s and it was working fine means I was getting mails in each minute but after dividing the * by any number say 30 it is not calling the script as it seems because I am not getting any mail.[/QUOTE]

[clunk.werclick]

So:
* * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php
Works

but
*/30 * * * * /usr/bin/lynx --dump http://localhost/TestDir/cron_test.php
Does not

Is that correct?