Quick Tip

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

Challenge: When running commands or scripts, standard error (stderr) and standard output (stdout) are often mixed, making it difficult to parse logs or redirect them effectively. You might want to capture all output, including errors, into a single file.

The Solution: Use the `2>&1` redirection to combine stderr and stdout.

your_command_here 2>&1 | tee output.log

Why it works: File descriptor `2` represents standard error, and `1` represents standard output. The `2>&1` tells the shell to redirect file descriptor 2 to the same place as file descriptor 1. Piping this combined stream to `tee` then displays it on your terminal while also saving it to `output.log`.

Pro-Tip: For more granular control, you can redirect stderr to a separate file by using `your_command_here 2> error.log > output.log`.

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