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tldr/pages/common/tee.md
Lena d427f333b2
pages/*: add backticks around I/O streams (#10436) 
* as suggested in #10428
* standard input  => `stdin`
* standard output => `stdout`
* standard error  => `stderr`

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
2023-08-09 10:59:02 +05:30

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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)