Below execution environment is at Ubuntu 14 LTS. rvm cron setup #sm start rvm example PATH="/usr/local/rvm/gems/ruby-2.3.0/bin:/usr/local/rvm/gems/ruby-2.3.0@global/bin:/usr/local/rvm/rubies/ruby-2.3.0/bin:/usr/local/rvm/gems/ruby-2.3.0/bin:/usr/local/rvm/gems/ruby-2.3.0@global/bin:/usr/local/rvm/rubies/ruby-2.3.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/local/rvm/bin" GEM_HOME='/usr/local/rvm/gems/ruby-2.3.0' GEM_PATH='/usr/local/rvm/gems/ruby-2.3.0:/usr/local/rvm/gems/ruby-2.3.0@global' MY_RUBY_HOME='/usr/local/rvm/rubies/ruby-2.3.0' IRBRC='/usr/local/rvm/rubies/ruby-2.3.0/.irbrc' RUBY_VERSION='ruby-2.3.0' #sm end rvm example change from shell to bash shell SHELL=/bin/bash # you definie your own crontab job 0 0 * * * . $HOME/.profile; cd /directory/you/want/toexecute; ruby /path/to/yourfile.rb parameter1 parameter2 ...etc > /dev/null 0 1 * * * . $HOME/.profile; cd /directory/you/want/toexecute; ruby /path/to/yourfile.rb `date -d "yesterday" "+%F"`