When your server memory is out then you will start to see that actions will be limited and your web server will go to maintenance mode. This could be very frustrating and have a very bad impact into your organization's daily running. TO avoid this problem, it is important to always check the memory usage of your Linux Server on a daily basis in order to decide whether to upgrade your memory to a larger one or to free up some space.
Getting the current memory usage of your Linux server is not as difficult as you think.
It can be diagnose via your command prompt line by using any of the following Linux commands below;
1. cat /proc/meminfo
2. free - m
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