Many times we realize that the RAM is taking extra space which may lead to slow performance of the system or server.

So we can optimize and free the RAM space with few commands.

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[root@localhost /]# free -m        # check the current RAM usage

[root@localhost /]# sync; echo 3 > /proc/sys/vm/drop_caches    #to clear the caches

[root@localhost /]# free -m        #check again after clearing the caches
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This way you can increase the RAM space.

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