File Directory Ruby

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  4. Is it block, char or socket or pipe
File.blockdev? '/dev/hda1'                   # => true
File.chardev? '/dev/tty1'                    # => true
File.socket? '/var/run/mysqld/mysqld.sock'   # => true
system('mkfifo named_pipe')
File.pipe? 'named_pipe'                      # => true