Quick Tip

Redirect stderr to stdout for Unified Logging

Challenge: When troubleshooting, you often have error messages (stderr) and normal output (stdout) scattered across different streams. This makes it difficult to analyze logs or redirect all relevant output to a single file.

The Solution: Redirect standard error (file descriptor 2) to standard output (file descriptor 1) using the `2>&1` operator.

your_command 2>&1 | tee output.log

Why it works: By directing file descriptor 2 (stderr) to file descriptor 1 (stdout), both regular output and error messages are treated as stdout. This allows you to capture all output from `your_command` into `output.log` via the `tee` command, which also displays it on your terminal.

Pro-Tip: For more complex redirection, remember that `&` signifies a file descriptor. For example, `&1` refers to stdout.

Linux Tips & Tricks | © ngelinux.com | 5/8/2026