Cron

• Reasons why crontab does not work
  http://askubuntu.com/questions/23009/reasons-why-crontab-does-not-work

Could be :

• The PATH variable isn't correct (and the given executable couldn't be loaded)

• the cron daemon isn't working

• There is no line break at the end of the crontab file (weird error, note sure it's still important)

• Mail the result of the cron

0 7 * * *  /home/user/backup/travail/synchro.sh | mail 'synchro prod89' mymail@gmail.com

• Send a email from script triggered on cron

http://stackoverflow.com/questions/1396506/cron-send-email-with-stderr-but-not-stdout

For cron you don't need to pipe through mail. The cron daemon will automatically mail any output of your command to you. Your crontab entry should look like:

every minute

• • • • • ./prog >/dev/null If there is no STDERR output, you won't get any mail.

Tuto

https://help.ubuntu.com/community/CronHowto