Similar to Tee_(UNIX)

Diff

Dirname

Du (Unix)

Ed (software)

Env

Eval

Expr

File (command)

Find (Unix)

Ln (Unix)

Ls

Mesg

Nl (Unix)

Pax (command)

Rm (Unix)

Sed

Split (Unix)

Touch (command)

true and false (commands)

Compress (software)

Wall (Unix)

Who (Unix)

Write (Unix)

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