From: Reid Thompson <Reid.Thompson@...>
Date: 2008-10-03T22:54:45+09:00
Subject: Re: Using Shell linux commands in Ruby!

Ch Asif wrote:
> I have the following text that allows for having shell linux commands
> executed and their results manipulated inside ruby code. If anyone can
> tell me a better way of doing this, or he/she can mention the pros and
> cons of this way of using shell linux commands inside ruby. I will be
> very thankful to him/her. The following text is also available on the
> link
> http://linux-certification.blogspot.com/2008/10/using-shell-commands-in-ruby.html
>
> The following is a step by step guide how can you write shell linux
> commands inside ruby code and get their results in customized output
> created by ruby.
>
>
> First of all execute the following command on shell prompt
>
> shell> vi userinfo.rb
>
> This will open up vi editor with a file named userinfo opened in it
>
> 1. Press i on your keyboard, this will switch the file userinfo into
> insert mode
> 2. Write the following code in it
>
>
>
> #Code Starts
> def user
> user = `users`
> end
>
> def groups
> groups = `groups`
> end
>
> puts "You are #{user} and you belongs to the groups \n #{groups}"
> #Code Ends
>
> 3. Press ESC key on your keyboard to exit insert mode
> 4. Now write :wq and press enter key on your keyboard
>
> This will throw you out to the shell prompt. On the shell prompt write
> the following command
>
> shell> ruby userinfo.rb
>
> You will the customized output like this
>
> You are root and you belong to the groups
>   [A list of group will be displayed on this line]
>
> Thats it to executing shell linux commands inside your linux code
>   
google ruby + popen