enter image description hereWhen I use the update50 command, the system produces an error:

bash: update50: command not found

How can I fix this problem?

  • 1
    Are you sure you are using the appliance? Could you include a screenshot?
    – ChrisG
    Jul 11, 2015 at 13:04
  • I have added the screenshot! please take a look Jul 11, 2015 at 20:34

1 Answer 1


Are you sure you are using the right version of appliance? As of last year the CS50 Appliance 2014 is being used. I see you are using the CS50 Appliance 3 version. Go here https://manual.cs50.net/appliance/2014/#instructions and follow the instructions.


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