1 example for mkfifo

  # mkfifo creates a named pipe as a file. You use it as the input for one
# program, and use it as the output for another, and it's as if those two
# were piping to eachother
mkfifo /tmp/named_pipe && gzip -c < /tmp/named_pipe > /tmp/out.gz &; cat /tmp/foo > /tmp/named_pipe