Quick Tip

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

Challenge: When running commands that produce both standard output (stdout) and standard error (stderr), it can be difficult to capture and analyze both streams together, especially for logging purposes.

The Solution: Redirecting stderr to stdout using `2>&1` allows you to treat both output streams as one.

command_that_produces_output 2>&1 | tee output.log

Why it works: File descriptor 1 is stdout, and file descriptor 2 is stderr. By redirecting file descriptor 2 to file descriptor 1 (`2>&1`), both streams are merged before being piped to `tee`, which then writes them to both the terminal and the specified log file.

Pro-Tip: Use this in conjunction with `nohup` to ensure your logs are captured even if you disconnect from your session. For example: nohup your_command 2>&1 &

Linux Tips & Tricks | © ngelinux.com | 6/7/2026