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

How free the RAM space in RHEL CentOS 7_bashcodes
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
This way you can increase the RAM space.

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