Simple example of using python-daemon with logging and PID lock file.

What is here:

• eg_daemon.py -- the Python-based daemon itself; should be installed in /var/lib/eg_daemon/
• eg_daemon.init -- SysV init script; should be installed in /etc/init.d

When eg_daemon.py is started, these two files will be created:

• /var/run/eg_daemon.pid -- this file will contain the PID of the daemonized process; it is automatically deleted when the daemon is stopped normally
• /var/log/eg_daemon.log -- log file