Restarting cron after changing crontab file

Question

Do I have to restart cron after changing the crontable file

User · Answer

On CentOS with cPanel sudo  etc init d crond reload does the trick    On CentOS7  sudo systemctl start crond service

User · Answer

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

User · Answer

Depending on distribution  using  cron reload  might do nothing  To paste a snippet out of init d cron  debian squeeze    reload force-reload  log daemon msg  Reloading configuration files for periodic command scheduler   cron        cron reloads automatically     log end msg 0          Some developer maintainer relied on it reloading  but doesn t  and in this case there s not a way to force reload  I m generating my crontab files as part of a deploy  and unless somehow the length of the file changes  the changes are not reloaded

User · Answer

On CentOS  my version is 6 5  when editing crontab you must close the editor to reflect your changes in CRON  crontab -e  After that command You can see that new entry appears in  var log cron Sep 24 10 44 26       crontab 17216           BEGIN EDIT          But only saving crontab editor after making some changes does not work  You must leave the editor to reflect changes in cron  After exiting new entry appears in the log  Sep 24 10 47 58       crontab 17216           END EDIT          From this point changes you made are visible to CRON

User · Answer

Ubuntu 18 04   Usage   etc init d cron  start stop status restart reload force-reload

User · Answer

1  If file  var spool cron crontabs root edit via SFTP client  - need service cron restart  Reload service not work   2  If edit file  var spool cron crontabs root via console linux  nano  mc  - restart NOT need   3  If edit cron via crontab -e - restart NOT need

User · Answer

Try this  service crond restart  Hence it s crond not cron

User · Answer

Try this out  sudo cron reload It works for me on ubuntu 12 10

User · Answer

I had a similar issue on 16 04 VPS Digital Ocean  If you are changing crontabs  make sure to run  sudo service cron restart

User · Answer

There are instances wherein cron needs to be restarted in order for the start up script to work  There s nothing wrong in restarting the cron    sudo service cron restart

User · Answer

try this one for centos 7   service crond reload

[linux] Restarting cron after changing crontab file?

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