In the Bash shell, what is the difference between piping into | and piping into |&?
Piping into | pipes stdout. Piping into |& pipes stdout and stderr.
Piping into | pipes both stdout and stderr. Piping into |& pipes only stdout.
Piping into | pipes both stdout and stderr. Piping into |& pipes only stderr.
Piping into | pipes stdout. Piping into |& pipes all open file descriptors.