15 lines
742 B
Ruby
15 lines
742 B
Ruby
module Kernel
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# Turns the current script into a daemon process that detaches from the console.
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# It can be shut down with a TERM signal.
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def daemonize
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exit if fork # Parent exits, child continues.
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Process.setsid # Become session leader.
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exit if fork # Zap session leader. See [1].
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Dir.chdir "/" # Release old working directory.
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File.umask 0000 # Ensure sensible umask. Adjust as needed.
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STDIN.reopen "/dev/null" # Free file descriptors and
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STDOUT.reopen "/dev/null", "a" # point them somewhere sensible.
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STDERR.reopen STDOUT # STDOUT/ERR should better go to a logfile.
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trap("TERM") { exit }
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end
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end |