One of the best known is, which is based on the ultra-efficient LX desktop environment.To get started, simply open Terminal and type: sudo apt-get install lubuntu-desktopOnce installed, you can load Lubuntu desktop from the login screen by clicking the icon next to your name.Alternatively, visit the to download a pre-packaged version of Ubuntu which uses this speedy desktop environment. If you have an older machine, it may struggle with some of the more advanced features.Fortunately, there are lightweight desktop alternatives available for Ubuntu. sync echo 2 > /proc/sys/vm/dropcaches clear pagecache, dentries and inodes. sync echo 1 > /proc/sys/vm/dropcaches clear dentries and inodes. using autoremove Method 2 : We can clean the temporary files automatically. clear ram ubuntu Code Example clear pagecache only. You will be prompted to enter your password and then hit enter. Open the terminal type the command sudo apt-get autoremove. Use lightweight desktop alternativesThe standard version of Ubuntu 18.04 uses the GNOME 3 desktop which is designed to strike a balance between slick graphics and resource efficiency. Method 1 : We can clean the temporary files using the command sudo apt-get autoremove. Some of these updates are fairly minor, whereas others, such as new versions of Ubuntu, are released twice a year and make significant changes to your system, maximising efficiency.To search for and apply updates, open the Linux Terminal and type: sudo apt-get updateTo check if a major upgrade is available, open Terminal and run the command: sudo apt-get upgradeTerminal will then prompt you to press ‘Y’ to continue.Make sure to save any open files and run a full backup of your system before doing this.3.
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