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Ruby

Posted by Gabriel Leoni
Gabriel Leoni
5,762 Points

IRB different than how it is in video.

When I start IRB I get this:

Gabriels-MacBook-Air:methods gabrielleoni$ irb irb(main):001:0>

However, the video shows this when he starts IRB: 1.9.3-p125 :004 >

So I cannot run the code from my back_account file in sublime text 2.

Please let me know how to update my IRB!

All the best,

4 Answers

Chris Shaw
Chris Shaw
26,676 Points

Hi Gabriel,

IRB allows you to execute any valid Ruby code within the console so any differences between your terminal window and what's in the video shouldn't matter as it's a simple case of you having a newer version of Ruby compared to the video.

Also if you need to execute a .rb file you would use the ruby executable via command line followed by the file name you wish to run, e.g.

ruby filename.rb

NOTE: To execute a file you must be in the same working directory as it, so if you have created the file on your desktop you must change your working directory by using the below command.

cd ~/Desktop

Hope that helps.

Kevin Marshall
Kevin Marshall
3,561 Points
Kevin Marshall
Kevin Marshall
3,561 Points

The difference is the prompt and the fact that the ruby in the video is not the latest release. Do you have Sublime text installed? The whole part before the > character doesn't matter in this case. You are in the irb in either case. His is just showing the ruby version. What error are you getting? You may need to move your file to the proper directory to run it. There is nothing wrong with your irb though.

Alp Eren Can
Alp Eren Can
25,230 Points
Alp Eren Can
Alp Eren Can
25,230 Points

Hi Gabriel,

If you are watching the videos now, your version of ruby is probably newer than what is being used in the videos. Go to the terminal (if you're on a Mac) and check your version of ruby by writing: ruby -v

What you need is a ruby version manager (rvm, in short) to install the version 1.9.3-p125. Follow this video to install rbenv: http://teamtreehouse.com/library/installing-a-ruby-development-environment/installing-a-ruby-development-environment/installing-ruby-on-mac

Cheers,

Gabriel Leoni
Gabriel Leoni
5,762 Points
Gabriel Leoni
Gabriel Leoni
5,762 Points

It now works! Thank you for the timely and helpful feedback. I'm one step closer!