How to suppress stacktrace in Ruby exit?

Question

  trap 'TERM' do
    warn 'Exiting.'
    exit 1
  end

This prints a 10 line stacktrace.

How to suppress the stacktrace and exit silently?

Ruby 2.2.0

Answer 1

You can do it like this:

trap "TERM" do
  warn "Exiting."
  $stderr.reopen(IO::NULL)
  $stdout.reopen(IO::NULL)
  exit 1
end

Answer 2

If you hit Ctrl + C, the signal will be INT, not TERM. If you want to catch both, you can do something like this:

p = proc do
  warn 'Exiting.'
  exit 1
end
trap 'INT',p
trap 'TERM',p