If you want the output to be more easy to read, you can add the -h (human-readable) option to the command. At the same time it also shows the total amount of used system memory. free CommandĪs its name implies, the free command is used to display the total amount of free memory. You can use your mouse to click on the memory column (MEM%) to sort processes by their memory usage. To view the memory usage using this command, execute: $ htop $ sudo pacman -S htop # Arch Linux / Manjaro $ sudo dnf install htop # Fedora/Alma/Rocky/CentOS To install it: $ sudo apt install htop # Debian/Ubuntu Htop doesn’t come installed by default on Linux. Htop is a interactive tool with an easy-to-read breakdown of current memory usage, along with other relevant system information. To sort the output by memory usage you can press the m key. To monitor the RAM usage simply execute: $ top

The top command is a useful tool that displays information about memory usage and each service utilizing it.

Stacer The best Linux system optimizer and monitoring tool top Command

Linux display memory usage