Quick Tip

Taming Terminal Noise: Redirecting stderr with 2>&1

Challenge: When running commands that produce both standard output (stdout) and standard error (stderr), it can be messy to manage. You might want to redirect both to a single file for easier analysis or troubleshooting.

The Solution: Use the `2>&1` redirection operator.

command_that_produces_output 2>&1 | tee output.log

Why it works: In shell redirection, `1` represents stdout, and `2` represents stderr. `2>&1` tells the shell to redirect file descriptor 2 (stderr) to the same location as file descriptor 1 (stdout). The `tee` command then splits this unified stream, writing it to `output.log` and also displaying it on your terminal.

Pro-Tip: You can also use `command_that_produces_output &> output.log` as a shorthand for `command_that_produces_output > output.log 2>&1`.

Linux Tips & Tricks | © ngelinux.com | 5/6/2026