how to create a cron job to run a ruby ​​script?

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I want to create a cron job to run a ruby script. this is what i have put in the crontab.

2 * * * * ruby /home/mark/project/script.rb >> /home/mark/cronOutput.txt

But its not running. I think there's some problem with the environment getting loaded up when the cron runs as root.

Please help.

If your ruby is in non standard paths then personally I like to wrap my ruby calls in a shell script, thereby ensuring that all the paths etc. my ruby program needs are set correctly, and schedule the script in crontab. Do something like

2 * * * * /home/mark/project/ruby_wrapper_sh >> /home/mark/cronOutput.txt 2>&1

and your /home/mark/project/ruby_wrapper_sh should read something like

#!/bin/bash

. ~mark/.bash_profile
`ruby /home/mark/project/script.rb`

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