Free Up RAM

🟢 Free Up » PageCache

echo 'sync;echo 1 >/proc/sys/vm/drop_caches'| sudo bash

🟡 Free Up » Swap Space

echo 'swapoff -a && swapon -a'|sudo bash

🟠 Free Up » Dentries & Inodes

echo 'sync;echo 2 >/proc/sys/vm/drop_caches'|sudo bash

🔴 Free Up » PageCache, Dentries & Inodes

echo 'sync;echo 3 >/proc/sys/vm/drop_caches'|sudo bash
echo 'sync;echo 3 >/proc/sys/vm/drop_caches && swapoff -a && swapon -a'|sudo bash

Playground

echo 'sync;echo 3 >/proc/sys/vm/drop_caches && swapoff -a && swapon -a'|sudo bash free -th		echo 'apt update;apt list --upgradable;apt upgrade'|sudo bash bottom

References

Clear RAM Memory Cache, Buffer & Swap sync » When & Why
SSH » Connection Hang Forever Python/Distribution Ruby on Rails TensorFlow Homebrew Linuxbrew Python2 TMux CURL