→Piping (Using Pipes)
[[Image:tee-diagram-1.png|thumb|right|450px|The '''tee''' utility can be used to split the flow of information. For example to save in a file as well as display on a screen. ]]
The '''tee''' utility can be used to split the flow of information. The tee option '''-a''' can be used to add content to the bottom of an existing file as opposed to overwriting the file's previous contents.