How to get the width of terminal window in Ruby

Question

Have you ever noticed that if you run rake -T in rails the list of rake descriptions are truncated by the width of the terminal window. So there should be a way to get it in Rub

Answer 1

def winsize
 #Ruby 1.9.3 added 'io/console' to the standard library.
 require 'io/console'
 IO.console.winsize
 rescue LoadError
 # This works with older Ruby, but only with systems
 # that have a tput(1) command, such as Unix clones.
[Integer(`tput li`), Integer(`tput co`)]
end

rows, cols = winsize
printf "%d rows by %d columns\n", rows, cols

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