Quick Tip

Tame Your Terminal Output: Unified Logging with `2>&1`

TITLE: Tame Your Terminal Output: Unified Logging with `2>&1`

Challenge: When running commands or scripts, it’s common to have important error messages (sent to stderr) and standard output (sent to stdout) mixed up or appearing in separate places. This makes it difficult to get a consolidated view of a command’s execution, especially for logging and debugging.

The Solution: You can redirect both standard error (file descriptor 2) and standard output (file descriptor 1) to a single destination, typically a file, using the `2>&1` redirection.

your_command &> output.log # OR your_command > output.log 2>&1

Why it works: The `&>` operator is a shorthand for redirecting both stdout and stderr to the specified file. Alternatively, `>` redirects stdout first, and then `2>&1` redirects stderr to the same place stdout is currently going (which is the file). This ensures all output, including errors, is captured in one place.

Pro-Tip: You can also pipe this unified output to other commands, for example: your_command &> output.log | grep "ERROR" to only see error lines from both streams.

Linux Tips & Tricks | © ngelinux.com | 5/31/2026