tee

Read from standard input and write to standard output and files (or commands).

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• Copy standard input to each file, and also to standard output:

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

• Append to the given files, do not overwrite:

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

• Print standard input 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)

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