Piping

Description

Piping is the connection of the standard output of one command to the standard input of another command.
Piping uses the pipe character.
Redirection breaks pipelines

Standard

commandOne -options arguments | commandTwo -options arguments

Taking snapshots of pipeline with 'tee' command

commandOne -options arguments | tee snapshot.txt | commandTwo -options arguments

Data coming out of commandOne is saved in snapshot.txt, but the data is also successfully piped through to commandTwo

Piping to commands that only accept command line arguments

commandName -options arguments | xargs echo	The long form, using the stream number
commandName -options arguments < input_source	The short form with no stream number

Examples