How to Free up Unused Memory in Ubuntu/Linux Mint

 



Check Memory Usage in Real-Time

• You can check your current memory usage using this command:

                       watch -n 1 free -m

• This command will also display in real-time your system memory usage:

                           watch -n 1 cat /proc/meminfo

Free Up Unused Memory

   Command 1

• You can free up unused memory under Ubuntu/Linux Mint using this command:

                                       sudo sysctl -w vm.drop_caches=3

NOTE: this action won't make your system faster nor it will affect its stability and performance, it will just clean up memory used by the Linux Kernel on caches.

Command 2
Here is another command that can help you free up memory either used or cached (page cache, inodes, and dentries):

sudo sync && echo 3 | sudo tee /proc/sys/vm/drop_caches

 

VIDEO :