Quick Tip

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

Challenge: When running commands or scripts, you often encounter both standard output (stdout) and standard error (stderr). If you need to capture both into a single log file or pipe them to another command, it can be cumbersome to manage two separate streams.

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

your_command > output.log 2>&1

Why it works: File descriptor 1 represents stdout, and file descriptor 2 represents stderr. The `2>&1` directive tells the shell to redirect stderr (file descriptor 2) to the same location as stdout (file descriptor 1). This effectively merges both streams.

Pro-Tip: This is incredibly useful for scripting. For example, to capture all output and errors from a script named `my_script.sh` into a file: `bash my_script.sh &> combined_output.log` is a shorthand for `bash my_script.sh > combined_output.log 2>&1`.

Linux Tips & Tricks | © ngelinux.com | 6/14/2026