Hands-On Software Engineering with Python

Managing services on other systems

Although the current trend for managing service processes in Linux systems is, as noted, moving toward systemd/systemctl, there may be operational systems that still use System V-style initialization scripts. A bare-bones starting point for such a script would look something like the following:

#!/bin/sh

# - The action we're concerned with appears as $1 in a standard 
#   bash-script
    case $1 in
        start)
            echo "Starting $0"
            /usr/bin/python /usr/local/bin/testdaemon.py
            ;;
        stop)
            echo "Stopping $0"
            /usr/bin/pkill -f testdaemon.py
            ;;
        restart)
            echo "Restarting $0"
            /usr/bin/pkill -f testdaemon.py
            /usr/bin/python /usr/local/bin/testdaemon.py
            ;;
    esac

In a System V-managed context, the service itself has to take responsibility ...