Background - the system has two different versions of ruby installed. I need to use the latest version to run this monitor script i've created

This is my crontab line:

0 * * * * /usr/local/rvm/rubies/ruby-2.2.1/bin/ruby /home/nexpose/ruby/console_monitor.rb

When I run this:

/usr/local/rvm/rubies/ruby-2.2.1/bin/ruby /home/nexpose/ruby/console_monitor.rb

it works as expected and even sends me an email as designed

When I check syslog I don't see much. I see that its being executed but no errors shown..

 # which ruby
 # ruby -v
 ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]

Does this have to do with my PATH configuration? I thought I was bypassing this by pointing directly to the ruby binary?

1 Answer 1


Remember that cron jobs have minimal environment settings. They do not have the settings you see in an interactive shell. Cron does not execute ~/.login, ~/.bashrc, etc.

To see errors from a cron job, I find it most convenient to redirect STDOUT and STDERR to a file. e.g append > /tmp/cron.out 2>&1 to the crontab entry. Otherwise your system might package the output into an email message to the owner of the crontab.

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