Quick Tip

Redirect stderr to stdout with `2>&1` for Unified Logging

Challenge: When running commands or scripts that produce both standard output (stdout) and standard error (stderr), it can be difficult to capture and analyze both streams effectively, especially when redirecting output to a file.

The Solution: Use the `2>&1` redirection operator to merge standard error into standard output.

your_command > output.log 2>&1

Why it works: File descriptor `1` represents stdout and file descriptor `2` represents stderr. `2>&1` tells the shell to redirect file descriptor `2` (stderr) to wherever file descriptor `1` (stdout) is currently pointing, which in this case is the `output.log` file.

Pro-Tip: You can also use this to send both streams to ` /dev/null` if you want to discard all output: your_command > /dev/null 2>&1

Linux Tips & Tricks | © ngelinux.com | 5/10/2026