How to run a Ruby script using rbenv with cron

Question

I'm trying to run a Ruby script using rbenv with cron. I know that I need to load rbenv in order to have the right Ruby version loaded.

I've tried options like this:

*/10 * * * * /bin/bash -c 'source $HOME/.bashrc; cd /data/app; ruby -v' >> /tmp/logfile.txt 2>&1

but as the session is not interactive, I'm not having the right Ruby version. I've found example like this:

15 14 1 * * export BASH_ENV=/path/to/environment && /full/path/to/bash -c '/full/path/to/rvm_script.rb'

It didn't work neither. Then I wrote a loader, which only load rbenv in the current shell but it doesn't work.

*/1 * * * * /bin/bash -c '$HOME/.rbenv/loader.sh ; cd /data/app/; ruby -v ' >> /tmp/logfile.txt 2>&1

Now I'm searching for another way to load it ... any ideas?

Answer 1

I've found a solution to load rbenv. Either with a loader importing rbenv to the PATH :

*/1 * * * * /bin/bash -c '. $HOME/.rbenv/loader.sh ; cd /data/app/; ruby -v'

The '.' before '$HOME/.rbenv/loader.sh' is important, it runs the script in the current shell

Or without loader, which is better :

*/1 * * * * /bin/bash -c 'export PATH="$HOME/.rbenv/bin:$PATH" ; eval "$(rbenv init -)"; cd /data/app/; ruby -v'