testinternet

Bash script to monitor internet connectivity on Linux systems

Attempts to ping 8.8.8.8 (Google's DNS service). If the status changes (online, offline), it outputs the information suitable for a log and also emails someone.

Maintains a state file so can detect how long it has been since the last change.

Usage

Edit the first few lines to set EMAIL and optionally the IP address to ping and location of statefile.

Use it in a cron job run every minute, eg.

# Every minute test internet connection
* * * * * $HOME/bin/testinternet >> $HOME/logs/testinternet.log

Notes

This has been tested on gentoo with bash-4.4