Quick Tip

Redirecting `stderr` to `stdout` for Unified Logging

Challenge: When running commands, especially in scripts, you often have output on both standard output (stdout) and standard error (stderr). To capture all output for logging or analysis, you need a way to combine them.

The Solution: Use the `2>&1` redirection operator.

your_command 2>&1 | tee /path/to/your/logfile.log

Why it works: The `2` represents standard error, and `&1` represents standard output. By redirecting `2` to `&1`, you’re telling the shell to send all error messages to the same place as standard output. Piping this combined stream to `tee` then writes it to both your terminal and a specified log file.

Pro-Tip: If you only want to send stderr to a file and keep stdout on the terminal, use `your_command 2>/path/to/error.log`.

Linux Tips & Tricks | © ngelinux.com | 5/1/2026