Hello,

If you are getting below mentioned error in your client exec

NOTICE: Crontab is not available in your system or you don’t have permissions to use it.
If you receive

If you want it to run from there then you can set it by going to /etc/cron.deny file for the user nobody and remove it.

Its the setting in client exec that allows you to set the cron job for your client exec system. But as the cron client exec set from there is under the ownerhsip of nobody we usually do not allow the cron to run under nobody ownership. But its risky to allow the nobody user to set the cron to run.

So its alwasy better to set the cron from your hosting control panel.

Enjoy..