Redirecting STDERR

So you don’t like STDERR vomming all over your console?

This script almost works but doesn’t redirect anything that is already hold the original file descriptor, e.g. C extensions.

#!/usr/bin/env ruby

STDERR.puts "Something"
$stderr = File.open(File::NULL, 'w')
STDERR.puts "...and something else"

This however reopens the same file descriptor and covers all bases.

#!/usr/bin/env ruby

STDERR.puts "Something"
$stderr.reopen('/dev/null', 'w')
$stderr.sync = true
STDERR.puts "...and nothing"

And we get…

./test.rb 
Something