I have shell-script for restart some service in ruby file, kill process and run, and it's work. I want to run this shell-script every hour, so I put commands bash to crontab, cron running every hour but my shell-script only execute kill process, the three last command which is run 3 ruby files doesn't execute.


sudo pkill -9 -f '/home/myuser/.rvm/rubies/ruby-2.4.0/bin/ruby /home/myuser/subscribe.rb'
sudo pkill -9 -f '/home/myuser/.rvm/rubies/ruby-2.4.0/bin/ruby /home/myuser/retry1.rb'
sudo pkill -9 -f '/home/myuser/.rvm/rubies/ruby-2.4.0/bin/ruby /home/myuser/retry2.rb'
sleep .5
nohup /home/myuser/.rvm/rubies/ruby-2.4.0/bin/ruby /home/myuser/subscribe.rb &!
nohup /home/myuser/.rvm/rubies/ruby-2.4.0/bin/ruby /home/myuser/retry1.rb &!
nohup /home/myuser/.rvm/rubies/ruby-2.4.0/bin/ruby /home/myuser/retry2.rb &!


0 */1 * * * bash -lc "/home/myuser/restart.sh"
  • Your crontab command should just be 0 * * * * bash -lc "/home/myuser/restart.sh" for every hour starting at 0 minute. – Terrance Aug 25 '18 at 1:54
  • @Terrance The problem isn't about scheduler in crontab (every hour) . I have problem with 3 last command in my script which is run 3 ruby files not execute if i'm using cron. – itx Aug 25 '18 at 2:08
  • I don't recall bash having &! operator, it should be just &. – Sergiy Kolodyazhnyy Aug 25 '18 at 2:19
  • Honestly there is no need for the /1 crontab.guru/every-1-hour. But that is beside the point. I agree with @SergiyKolodyazhnyy here about having the ! at the end of your line. Did you try your script outside of crontab just to make sure it even works? – Terrance Aug 25 '18 at 2:21
  • 1
    I do have one question here, why are you running the command with bash -lc? You could probably get away with the first line in your script as #!/bin/bash so there would be no need to call bash outside of the script. Just trying to think of all possibilities as to why the script is not working properly. – Terrance Aug 25 '18 at 2:54

Finally, I found a solution.

The point of problem isn't permission but in a different shell environment than cron is executing in, especially run ruby file.

Since I'm use rvm for manage ruby versions, so I found example

#!/usr/bin/env bash

# load rvm ruby
source /usr/local/rvm/environments/ruby-2.1.1@projectX

bundle install
ruby /path/to/script.rb
rake do something

source : https://rvm.io/integration/cron#example-script

So, I have modified my shell-script looks like :

#!/usr/bin/env bash
sudo pkill -9 -f 'ruby /home/myuser/subscribe.rb'
sudo pkill -9 -f 'ruby /home/myuser/retry1.rb'
sudo pkill -9 -f 'ruby /home/myuser/retry2.rb'
sleep .5
source /home/mysuser/.rvm/environments/ruby-2.4.0
nohup ruby /home/myuser/subscribe.rb &
nohup ruby /home/myuser/retry1.rb &
nohup ruby /home/myuser/retry2.rb &

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