Crontabs not running?

[Nequeo]

Greetings all,

I recently decided to switch from XP to Ubuntu. I am now (almost) happily running Hoary, AMD64 version. I've had a few teething problems, and google led me to this forum more often than not. But there are still one or two things I have not been able to solve, and cron is one of them.

The story is this: My ISP has unlimited bandwith between the hours of 2:00am and 9:00am. My quest; to run Azureus at 2:00am and then shut it down at 9:00am.

I fire up vi and create the following file 'schedule_azureus'

0 2 * * * /home/####/apps/azureus/azureus
0 9 * * * killall java

(Btw, if there's a more elegant way to do this, please let me know)

I then type 'crontab schedule_azureus'. "crontab -l" assures me that the jobs are scheduled. I have no cron.allow or cron.deny entries.

I can see the cron process running. I can see cron.daily tasks appearing in my cron logs in /sys/var. I am happy. I go to sleep.

I wake up and check my machine before I go to work. Azureus is not running. I check the logs. There was no sign that cron even attempted to run either of my jobs. Similar experiments reveal that cron will not execute anything I put in a crontab. Using crontab -e and manually adding in the jobs did not work. Running crontab -u #### did not work either.

Any suggestions?

Thanks!

[kamilek]

I have problem with crond. When I define very simple command to run in crontabs like this:

30 * * * * mkdir /tmp/harddisk/a

is it ok but when I define something like this:

30 1 * * * mkdir /tmp/harddisk/a

the command is not run. I tried also 30 01 .............. with the same result.


with command crontab -l I can see that everything is OK.

I have mounted me USB stick to tmp/harddisk.

[philicious]

I Have a simple question
My script has to run every day at 8H30

Therefore, i made this setting

30 8 * * */usr/bin/perl /usr/local/4admin/apache/###/MH_Systems/cron.pl

did i make a mistake, because it isn't realy working like it should...

[antidrugue]

The general syntax looks like that :

# m h dom mon dow user command

So you should mention which user runs the command.

For example if I want to run CLAMSCAN everyday at 4h27 :

27 4   * * *   root    /usr/bin/clamscan -r / -l /var/log/lastscan.txt