How to check memory of server in linux

Linux is one of the most popular open source operating system and comes with huge set of commands. The most important and single way of determining the total available space of the physical memory and swap memory is by using “free” command.

The Linux “free” command gives information about total used and available space of physical memory and swap memory with buffers used by kernel in Linux/Unix like operating systems.

This article provides some useful examples of “free” commands with options, that might be useful for you to better utilize memory that you have.

1.

Linux command to check memory utilization in percentage

Linux command to check memory utilization in percentage

How to check total memory in linux in gb

How to check cpu in linux

Linux memory usage by process

What is swap memory in linux

Display System Memory

Free command used to check the used and available space of physical memory and swap memory in KB. See the command in action below.

# free total used free shared buffers cached Mem: 1021628 912548 109080 0 120368 655548 -/+ buffers/cache: 136632 884996 Swap: 4194296 0 4194296

2.

Display Memory in Bytes

Free command with option -b, display the size of memory in Bytes.

# free -b total used free shared buffers cached Mem: 104614

how to check total memory usage in linux

how to check total physical memory in linux