From: Dwayne Henderson <its.code.in.here@...>
Date: 2013-01-24T20:32:58+09:00
Subject: Crontabbing a Ruby script inside a screen

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Hi, I run this Ruby + Sequel script inside a screen that records data from
this live stream 24/7. But it tends to core dump every once in a while, and
since I run it in a screen (so it's easy to check in on), I can't really
scroll up to catch the error whenever it happens.

So how do I crontab the screen with the Ruby script inside it? Has to be
with a "don't run it if it's already running" check to avoid fatal
consequences. So far I have:

$ crontab -e

*/10 * * * * lockf -t 0 /home/anonymous/.myscript.rb.lock
/usr/local/bin/screen -d -m -S myscript
/home/anonymous/.rvm/rubies/ruby-1.9.3-p0/bin/ruby
/home/anonymous/myscript.rb

Thank you!

--Dwayne

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Hi, I run this Ruby + Sequel script inside a screen that records data from =
this live stream 24/7. But it tends to core dump every once in a while, and=
 since I run it in a screen (so it&#39;s easy to check in on), I can&#39;t =
really scroll up to catch the error whenever it happens.<br>
<br>So how do I crontab the screen with the Ruby script inside it? Has to b=
e with a &quot;don&#39;t run it if it&#39;s already running&quot; check to =
avoid fatal consequences. So far I have:<br><br>$ crontab -e<br><br>*/10 * =
* * * lockf -t 0 /home/anonymous/.myscript.rb.lock /usr/local/bin/screen -d=
 -m -S myscript /home/anonymous/.rvm/rubies/ruby-1.9.3-p0/bin/ruby /home/an=
onymous/myscript.rb<br>
<br>Thank you!<br><br>--Dwayne<br>

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