/usr/lib/ruby/vendor_ruby/specinfra/command/darwin/base/port.rb is in ruby-specinfra 2.66.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | class Specinfra::Command::Darwin::Base::Port < Specinfra::Command::Base::Port
class << self
def check_is_listening(port, options={})
regexp = ":#{port} "
protocol = options[:protocol] || 'tcp'
protocol_options = case protocol
when 'tcp'
"-iTCP -sTCP:LISTEN"
when 'tcp6'
"-i6TCP -sTCP:LISTEN"
when 'udp'
"-iUDP"
when 'udp6'
"-i6UDP"
end
"lsof -nP #{protocol_options} | grep -- #{escape(regexp)}"
end
end
end
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