Comments on: How to Pipe Command Output to Other Commands in Linux

By: Ravi Saive

Ravi Saive — Wed, 31 Jul 2024 04:57:45 +0000

In reply to David Webb. @David, You're absolutely right! The tee command is particularly useful when you want to direct output to multiple files at once or also display it on the terminal while saving it to a file. For a simple case where you only need to save output to one file, redirection with > or >> works just fine.

By: David Webb

David Webb — Tue, 30 Jul 2024 13:14:38 +0000

I see a lot of articles explaining the tee command the way you did, but why use tee like this? Your code example:

ps -eo cmd,pid,ppid,%mem,%cpu --sort=-%mem | head | tee topprocs.txt

could just as easily use redirection instead of tee:

ps -eo cmd,pid,ppid,%mem,%cpu --sort=-%mem | head > topprocs.txt

Use >> for appending. In my opinion, tee is useful if you need to send the same output to multiple files simultaneously:

ps -eo cmd,pid,ppid,%mem,%cpu --sort=-%mem | head | tee topprocs1.txt topprocs2.txt

and so on.

By: Ravi Saive

Ravi Saive — Mon, 12 Jun 2023 04:21:32 +0000

In reply to Pavel Vachek.

@Pavel,

Thanks, corrected the command in the article…

By: Pavel Vachek

Pavel Vachek — Sun, 11 Jun 2023 19:17:09 +0000

"Tree – Send Command Output to Other Command and Save to File" I think that the first word in the title should read "Tee", not "Tree".