Network Connectivity Cron

This script checks if the network manager is running or if there is network connectivity, if not it restarts network manager. Great for cronjobs to check every 2 minutes to ensure remotely managed machines always stay online.

Copy the following script in the a new file, in this case I'm calling it check_network. Place it at the following location:



if ping ; then
	service network-manager restart

Add the following line to /etc/crontab. Change the */2 to whatever increment you want to have this script run in minutes. It's currently set to run /usr/local/bin/check_network every two minutes.

*/2 * * * * root /usr/local/bin/check_network

Set the execute permissions on the script. As root, type:

chmod +x /usr/local/bin/check_network

To ensure the cronjob is running or not. Running the β€œsystemctl” command along with the status flag will check the status of the Cron service as shown in the image below. If the status is β€œActive (Running)” then it will be confirmed that crontab is working perfectly well, otherwise not.

$ systemctl status cron

To edit or add/remove cron jobs:

$ crontab –e

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