CLI

How to Log In to Ubuntu 12.10 Using the Root Account

Learn how to enable root login on Ubuntu 12.10 Quantal Quetzal, understand the security implications, and discover safer alternatives using sudo.

How to Restart X Server in Ubuntu 12.04 Without Rebooting

Three reliable methods to restart the X server in Ubuntu 12.04 Precise Pangolin — LightDM service restart, TTY console switching, and killing the X process — with guidance on when each is appropriate.

How I Manage Bandwidth Using Trickle on Ubuntu

A practical guide to managing per-application bandwidth on Ubuntu using Trickle — covering installation, upload and download rate limiting, persistent configuration with trickled, daemon mode, and real-world use cases for shared connections.