With Ubuntu you should have upstart installed by default and therefore the daemon can be installed even easier.
Create a new script file at: /etc/init/jakchat.conf with following content:
# Info description "Live Chat WebSocket" author "JAKWEB / Live Chat WebSocket" # Events start on startup stop on shutdown # Automatically respawn respawn respawn limit 20 5 # Run the script! # Note, in this example, if your PHP script returns # the string "ERROR", the daemon will stop itself. script [ $(exec /usr/bin/php -f /PATH_TO_THE_SOCKET_SERVER/server/socketserver.php) = 'ERROR' ] && ( stop; exit 1; ) end script
That will do the same and starts automatically on startup.
You can also manually start / stop and check the status with following lines:
sudo service jakchat start sudo service jakchat stop
sudo service jakchat status
Much better solution than a simple bash script, but sadly not all linux server have upstart integrated by standard.