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Contents
# = Daemonize
#
# Turns the current script into a daemon process
# that detaches from the console.
# It can be shut down with a TERM signal.
#
# == Authors
#
# * David Heinemeier Hansson
#
# == Copying
#
# Copyright (c) 2006 David Heinemeier Hansson
#
# Ruby License
#
# This module is free software. You may use, modify, and/or redistribute this
# software under the same terms as Ruby.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.
#
module Kernel
# Turns the current script into a daemon process
# that detaches from the console.
# It can be shut down with a TERM signal.
def daemonize
exit if fork # Parent exits, child continues.
Process.setsid # Become session leader.
exit if fork # Zap session leader. See [1].
Dir.chdir "/" # Release old working directory.
File.umask 0000 # Ensure sensible umask. Adjust as needed.
STDIN.reopen "/dev/null" # Free file descriptors and
STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
STDERR.reopen STDOUT # STDOUT/ERR should better go to a logfile.
trap("TERM") { exit }
end
end
Version data entries
17 entries across 17 versions & 2 rubygems