Quick Tip

Taming Terminal Noise: Unified Logging with `2>&1`

Challenge: When running commands or scripts that produce both standard output (stdout) and error output (stderr), it can be cumbersome to manage and view these streams separately, especially when you want to redirect both to a single log file.

The Solution: Utilize shell redirection to combine stderr into stdout.

your_command 2>&1 | tee output.log

Why it works: The `2>&1` redirection tells the shell to send file descriptor 2 (stderr) to the same location as file descriptor 1 (stdout). Piping this combined output to `tee` then writes it to both the terminal and the specified log file (output.log).

Pro-Tip: For scripts, adding `set -o pipefail` at the beginning ensures that if any command in a pipeline fails, the entire pipeline fails, preventing silent errors.

Linux Tips & Tricks | © ngelinux.com | 6/16/2026