tldr/pages/common/tee.md

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tee

Read from stdin and write to stdout and files (or commands). More information: https://www.gnu.org/software/coreutils/tee.

  • Copy stdin to each file, and also to stdout:

echo "example" | tee {{path/to/file}}

  • Append to the given files, do not overwrite:

echo "example" | tee -a {{path/to/file}}

  • Print stdin to the terminal, and also pipe it into another program for further processing:

echo "example" | tee {{/dev/tty}} | {{xargs printf "[%s]"}}

  • Create a directory called "example", count the number of characters in "example" and write "example" to the terminal:

echo "example" | tee >(xargs mkdir) >(wc -c)