Question

Suppose i have a ruby script that prints some message like Hello World

Now, can i make custom shell command like printMessage which passes the control to my ruby script ?

so that whenever i type printMessage from the command line, it prints Hello World ?

Answer 1

Add this to your .bashrc or .bash_profile

alias printMessage='ruby /path/to/file.rb'

Should do it. Unless I misunderstood the question.

And puts will print to command line. And you have to reload your bash profile once you’ve done this to get it to work. Just type source ~/.bashrc to reload it.

May have to chmod the file.

Alternative:

alias printMessag='ruby -e "puts \"Hello World\""'

Should work too.