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Ruby スクリプトをDaemon化する簡単な方法

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[ruby]僕たちが待ち望んでいたRubyスクリプトをデーモン化する方法

のまんま転記なのだけれど、わすれないように、メモ

ruby 1.9からは下記Methodが使える
これをスクリプトの先頭に加える

foo.rb
Process.daemon

簡単に、Daemon or not を切り替えるために

daemonize.rb
Process.daemon

と書いておいて、require "daemnize" とよびだせるようにしておくと、起動オプションで、切りかえ可能になる。

ruby -r daemonize foo.rb

や、この -r option で、処理を切り替えるやりかたは、いろいろ応用できそう。勉強になりました!

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