How to check memory usage in ubuntu terminal

When using any Linux distribution, it is important as a SysAdmin to know how to visualize your available and used resources, such as memory, CPU, disk space, etc.

We have already showed you how to check CPU info in Linux, today, I am going to show how to check memory in Linux.

Note: Memory, physical memory terms are used for RAM (which is a more popular term).

In other words, if you want to check RAM usage in Linux, you use the memory related commands. If you want to check disk space in Linux, you use disk related commands.

5 Commands to check memory usage in Linux

In this article, we will cover how to check memory in different ways and explain a little bit how each of the command lines for this purpose works.

1.

Linux memory usage by process in mb

free

The free command in Linux has the simplest output. It shows the amount of free and used memory on your Linux system.

You can see the free and used physical memory i.e. RAM, the swap usage and the buffer used by the Linux kernel.

All you have to do is to type free in the terminal and hit enter:

You can see that the free command provides only the necessary i

linux show memory usage by process human readable

linux show memory usage percentage