Ubuntu

You cannot factory-reset a complete Ubuntu installation with one safe desktop command, but you can reset dconf preferences, remove selected packages, or reinstall Ubuntu when you need a fresh operating system. That distinction matters because dconf reset -f / changes settings for the current user. It does not remove your home-directory files, reinstall Ubuntu, repair

A persistent Ubuntu live USB keeps files, installed packages, and desktop changes after you restart. mkusb creates the drive from an Ubuntu ISO and reserves writable storage, so you can carry a live environment without installing Ubuntu on the computer’s internal disk. The tool rewrites the target USB. Download the current Ubuntu Desktop ISO from

The error sudo: npm: command not found means sudo cannot locate npm in its own command search path. First check whether npm is missing for every shell or only when you add sudo, then use the matching fix. Check which command is missing Before you change package sources, run these checks to separate a missing

Installing Ubuntu on a second drive lets you keep Windows on its own disk, but the setup still depends on one decision: start the installer in the same firmware mode that Windows uses. This walkthrough shows how to install Ubuntu without selecting or formatting the Windows drive, then choose either Ubuntu or Windows from the

An Ubuntu splash screen that never reaches the sign-in screen needs a diagnosis before a repair. Start with recovery mode to separate a package, filesystem, kernel, or graphics-driver problem, then make one change at a time. Start with the least invasive boot path Open the GRUB menu during startup. On many BIOS systems, hold Shift

Docker Engine lets Ubuntu run an application in an isolated container without creating a full virtual machine. This installation uses Docker’s apt repository, then confirms that the daemon can download and run the hello-world image. Before you install Docker Use a supported Ubuntu release and an account that can run sudo. Docker’s post-install steps explain

A DHCP server assigns network settings to clients, but it must serve the correct subnet on the correct interface. This Ubuntu walkthrough configures isc-dhcp-server, validates the file before restart, and marks the boundary for new deployments. Ubuntu still documents isc-dhcp-server, while its current server guide warns that the package is deprecated. Use this path to

The No Wi-Fi Adapter Found message means Ubuntu has no usable wireless device to show in Settings. Start by finding out whether the kernel can see the hardware, then check the driver, radio block, and firmware instead of installing a driver package by guesswork. Start with a temporary connection Use Ethernet, USB tethering, or another

Ubuntu can use a different Media Access Control (MAC) address for one network connection, Use NetworkManager when you want the setting to survive reconnects, or use ip link for a temporary change that lasts only until the interface is reset. A MAC address identifies a network interface on the local network, Changing it can help

Install TeX Live and Texmaker with Ubuntu’s APT repository when you want a maintained LaTeX toolchain and a graphical editor that can compile a document in one place. Start with the base LaTeX packages, then add Texmaker. Install texlive-full only when your document needs packages that are not part of the base setup. Choose the