Oct 20

Sometimes it’s convenient to direct the output of a command to both the screen and a file. Here’s how to do it:

command 2>&1 | tee output.log

The tee command copies stdin to stdout, and makes a copy of the input to a file. The 2>&1 part also directs the stderr output, in addition to stdout. You can use tee -a to append to the log instead of overwriting.

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