"Old Unix hands already know this, but new Unix (Linux)
users may be asking, 'What is a "watchdog script"?' Basically it is
a bash or other script that is run via cron periodically to check
on a persistent service. The watchdog script takes actions based on
the state of the service it monitors.
"There are other examples of watchdog scripts on the internet.
Just search for them using your favorite search engine to see them.
Following is a watchdog script we created recently for a client to
monitor an e-mail to pager system my company wrote for the client.
Here is the script (with sensitive bits changed to protect the