Quick Tip

Redirect `stderr` to `stdout` for Unified Logging

Challenge: When running complex commands or scripts, error messages (stderr) and standard output (stdout) often get interleaved or lost, making it difficult to track down issues.

The Solution: Redirect standard error to standard output using the `2>&1` construct.

your_command 2>&1 | tee output.log

Why it works: The `2>&1` tells the shell to send file descriptor 2 (stderr) to the same destination as file descriptor 1 (stdout). Piping this to `tee` then allows you to see the combined output on your terminal while also saving it to a file.

Pro-Tip: For even finer control, you can redirect stderr to a separate file: your_command 2> errors.log > output.log

Linux Tips & Tricks | © ngelinux.com | 4/28/2026