Ruby stdout and stderr

Very cool, thanks to a comment from a reader I just learned about the Ruby $stdout and $stderr variables. In short, you can write to STDOUT and STDERR in Ruby using code like this:

$stdout.puts "stdout"
$stderr.puts "stderr"

If you put those two lines in a Ruby script, and then run the script like this:

ruby test.rb > stdout 2> stderr

you'll find that the stdout and stderr files will contain the two different strings.

Ah, gotta love Ruby, a concise language that just does what you expect it to do.

 

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