daemon.rb

# This is a skeleton for a daemon process that behaves well in
# a unix environment.

# Fork a child process and exit the parent
exit(0) if Process.fork

# Trap the signal sent by the kill command
trap("SIGTERM") { Syslog.warning("I died"); exit(0) }

# Establish this process as a new session and process group leader,
# with no controlling tty
Process.setsid

# Ensure we are not on a mounted filesystem, as this process would
# allow it to be unmounted
Dir.chdir("/")

# Clear the file mode creation mask for our process, in case a
# mask was inherited from the parent process.
File.umask(0000)

# Use syslog for logging
require 'syslog'
Syslog.open

loop do
  Syslog.warning "Looping and logging for no reason!"
  sleep(2)
end