Ruby run shell command in a specific directory

Question

I know how to run a shell command in Ruby like:

%x[#{cmd}]

But, how do I specify a directory to run this command?

Is there a simila

Answer 1

Ruby 1.9.3 (blocking call):

require 'open3'
Open3.popen3("pwd", :chdir=>"/") {|i,o,e,t|
  p o.read.chomp #=> "/"
}

Dir.pwd #=> "/home/abe"