Quick Tip

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

Challenge: When running commands or scripts, you often want to capture both standard output (stdout) and standard error (stderr) into a single log file for easier analysis. By default, these go to separate streams, making it difficult to track the complete execution flow.

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

your_command > output.log 2>&1

Why it works: This redirects stdout (file descriptor 1) to `output.log`. Then, `2>&1` redirects stderr (file descriptor 2) to the current location of stdout (which is already redirected to `output.log`), effectively merging both streams into one file.

Pro-Tip: To append to an existing log file instead of overwriting it, use `>>` instead of `>`: `your_command >> output.log 2>&1`

Linux Tips & Tricks | © ngelinux.com | 6/9/2026