Wazaterm » Linux Commands » free

How to use free Linux command

The free displays the total amount of free and used physical and swap memory in the system, as well as the buffers and caches used by the kernel.

Usage

Display memory usage as the human-readable output

$ free -h

Display memory usage as human readable format 3 times in 3 seconds interval

$ free -h -s 3 -c 3