How can I clear the terminal in Ruby?

Question

I would like to know to how to do in Ruby what I can do with system(\"clear\") in C. I wrote a program like

puts \"amit\"
system(\"clear\")


        

Answer 1

Works on UNIX:

system("clear")

Answer 2

If you are on a Mac you can clear your terminal window with "Command + K".

Answer 3

If you want something that is vaguely portable you can try:

system "clear" || system "cls"

which will try both clear and cls

Answer 4

A slight variation works:

puts "Here's a very long string"
sleep 1
system ("cls")

Mark.

Answer 5

Here is a multiplatform way to do it:

Gem.win_platform? ? (system "cls") : (system "clear")

Answer 6

clear_screen (Ruby 2.7+)

Starting from Ruby 2.7, there is a build-in and cross-platform way to clear the terminal output:

require 'io/console'

$stdout.clear_screen # or STDOUT.clear_screen

See the difference between $stdout and STDOUT here.