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cannot_be_trapped = %w[KILL STOP] # See man 2 signal
(Signal.list.keys - cannot_be_trapped).each do |signal|
begin
Signal.trap(signal, -> {})
rescue ArgumentError => e
unless /can't trap reserved signal|Signal already used by VM or OS/ =~ e.message
raise e
end
else
Signal.trap(signal, "DEFAULT")
end
end
puts "OK"
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