The free command is the most simple and easy to use command to check memory usage on linux. Here is a quick example. The m option displays all data in MBs. The total os 7976 MB is the total amount of RAM installed on the system, that is 8GB.The used column shows the amount of RAM that has been used by linux, in this case around 6.4 GB. The output is pretty self explanatory. The catch over here is the cached and buffers column. The second line tells that 4.6 GB is free.he total os 7976 MB is the total amount of RAM installed on the system, that is 8GB. The used column shows the amount of RAM that has been used by linux, in this case around 6.4 GB. The output is pretty self explanatory. The catch over here is the cached and buffers column. The second line tells that 4.6 GB is free.
1 Compound (enclosure) , a cluster of buildings having a shared purpose, usually inside a fence or wall. 2  Compound (fortification) , a version of the above fortified with defensive structures. 3  Compound bow, a type of bow for archery. 4  Compound (linguistics) , a word that consists of more than one radical element.
Water is a compound because its molecules are formed of chemically combined elements (hydrogen and oxygen) in a fixed proportion. A mixture is a combination of separate atomâ¦s, molecules, or particles that are not chemically bonded or in any fixed proportion. Making the world better, one answer at a time.