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)`