I'm new to Ruby, and just installed the 'net-ssh' gem to simply interact with SSH servers, a function which I need. The gem is properly located in its folder.   I was not sure how to 'include' the gem in my RUBY script as instructed using the line: $:.push("/home/dangmoo/ruby/gems"), so I simply pasted it to the beginning.   However, when I try to run a script using this gem, things don't work.   This is how the script looks like:    Although the script should simply return the output of the command 'ls' from my Linux SSH - it only output the HTML line 'This is a test' while the SSH part is totally ignored (without an error message).   Do you see anything wrong here? Can you help me fix this?   Thanks!