From: Karl Bennett <where_1ts@...>
Date: 2006-04-06T09:11:14+09:00
Subject: HOWTO Use Veriables inside of Regexp and Commands?

Hi,

I've just started using Ruby and am LOVING IT! :D

For my job I need to do allot of shell scripting but have been getting 
very annoyed at its limitations.

So I am now looking to Ruby to replace it. The thing is I need to be 
able to run a command say "ls" with a variable say "directory". Heres an 
example of what I would do in shell script.

$directory="/tmp"

ls $directory

Now in Ruby I have to use the backquotes for commands right? So if I 
create a variable directory in Ruby how do I get it's contents to be 
executed in the command or evaluated in a regular expression?

For example:

directory = "/tmp"

puts `ls directory`
puts /directory/

I know the above is wrong and both will just evaluate the word directory 
not the variables contents. So how do I get the contents in there?

Thank you very much for you help.

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