Quick Tip

Tame Your Terminal: Redirect `stderr` with `2>&1` for Unified Logging

Challenge: When running commands or scripts, error messages (stderr) and normal output (stdout) are often displayed separately, making it difficult to capture and analyze all output in a single log file.

The Solution: Redirect both standard error (stderr) and standard output (stdout) to a single file using `2>&1`.

your_command_here > output.log 2>&1

Why it works: The `> output.log` redirects stdout to `output.log`. Then, `2>&1` tells the shell to redirect file descriptor 2 (stderr) to the same location as file descriptor 1 (stdout), effectively merging both streams into the single log file.

Pro-Tip: You can use `&&` to chain commands so that a subsequent command only runs if the previous one succeeds, or `||` to run a command only if the previous one fails. For example: your_command > output.log 2>&1 && echo "Command completed successfully".

Linux Tips & Tricks | © ngelinux.com | 6/2/2026