How to execute a Ruby script in Terminal

Question

I ve set everything up that I need on my Mac  Ruby  Rails  Homebrew  Git  etc   and I ve even written a small program  Now  how do I execute it in Terminal  I wrote the program in Redcar and saved it as a  rb  but I don t know how to execute it through Terminal  I want to run the program and see if it actually works  How do I do this

User · Answer

In case someone is trying to run a script in a RAILS environment, rails provide a runner to execute scripts in rails context via

rails runner my_script.rb

More details here: https://guides.rubyonrails.org/command_line.html#rails-runner

User · Answer

Although its too late to answer this question  but still for those guys who came here to see the solution of same problem just like me and didn t get a satisfactory answer on this page  The reason is that you don t have your file in the form of  rb extension  You most probably have it in simple text mode  Let me elaborate  Binding up the whole solution on the page  here you go  assuming you filename is abc rb or at least you created abc    Type in terminal window   cd   to the program location ruby abc rb   and you are done  If the following error occurs  ruby  No such file or directory -- abc rb  LoadError    Then go to the directory in which you have the abc file  rename it as abc rb Close gedit and reopen the file abc rb  Apply the same set of commands and success

User · Answer

Open your terminal and open folder where file is saved  Ex  home User1 program test rb   Open terminal  cd  home User1 program ruby test rb   format or test rb  class Test    def initialize    puts  I love India    end end    initialize object Test new   output  I love India

User · Answer

Open Terminal   cd to the program location ruby program rb   or add    usr bin env ruby in the first of your program  script tell that this is executed using Ruby Interpreter   Open Terminal  cd to the program location chmod 777 program rb   program rb

User · Answer

Assuming ruby interpreter is in your PATH  it should be   you simply run  ruby your file rb

User · Answer

Just invoke ruby XXXXX rb in terminal  if the interpreter is in your  PATH variable     this can hardly be a rails thing  until you have it running

User · Answer

To call ruby file use   ruby your program rb  To execute your ruby file as script     start your program with    usr bin env ruby run that script using   your program rb param If you are not able to execute this script check permissions for file

User · Answer

For those not getting a solution for older answers  i simply put my file name as the very first line in my code   like so    ruby file name here rb   puts  hello world

User · Answer

Just call  ruby your program rb  or   start your program with    usr bin env ruby  make your file executable by running chmod  x your program rb and do   your program rb some param

[ruby] How to execute a Ruby script in Terminal?

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