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Do I have to restart cron after changing the crontable file?
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No. As long as you use the crontab -e command to edit the file, when you save it, you'll get a 'New Crontab Installed' message.
To run a cron job at every system boot, add a string called @reboot to the end of the task list. The job defined by this string runs at startup, immediately after Linux reboots. Note: Always use the full path to the job, script, or command you want to run, starting from the root.
When you create a crontab file, it is automatically placed in the /var/spool/cron/crontabs directory and is given your user name. You can create or edit a crontab file for another user, or root, if you have superuser privileges.
No.
From the cron man page:
...cron will then examine the modification time on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab file is modified
But if you just want to make sure its done anyway,
sudo service cron reload or
/etc/init.d/cron reload If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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