Linux

tee

SafeWrite to screen and file

<command> | tee <file>

Shows pipe output while saving it. -a appends. Great for keeping evidence of maintenance work.

Examples

  • sudo apt upgrade | tee upgrade.logRun while logging

Syntax

<cmd> | tee [-a] <file>

Before you run it

Overwrites unless -a.

Related commands

  • tailFollow file tail
  • catPrint file contents

The same reference, with no signal at all

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