Quick Tip

Taming Terminal Noise: Redirecting `stderr` with `2>&1`

Challenge: When running commands, especially in scripts or while redirecting output to a file, you often want to capture both standard output (stdout) and standard error (stderr) in a single location. By default, stderr is displayed on your terminal, making it difficult to get a clean log file.

The Solution: Use the redirection operator 2>&1 to send stderr to stdout.

your_command > output.log 2>&1

Why it works: The number 2 represents stderr, and the ampersand & indicates that the following number is a file descriptor. Thus, 2>&1 tells the shell to redirect file descriptor 2 (stderr) to the same location as file descriptor 1 (stdout). The > output.log part redirects the combined stdout and stderr to the specified log file.

Pro-Tip: You can also use && to ensure the next command only runs if the previous one succeeded, for more robust scripting: your_command > output.log 2>&1 && echo "Command completed successfully."

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