clear cache command in linux code example

Example 1: linux memory cache clear

# clear pagecache only.
sync; echo 1 > /proc/sys/vm/drop_caches

# clear dentries and inodes.
sync; echo 2 > /proc/sys/vm/drop_caches

# clear pagecache, dentries and inodes.
sync; echo 3 > /proc/sys/vm/drop_caches

Example 2: linux drop caches

# sync; echo 3 > /proc/sys/vm/drop_caches

Example 3: how to clear memory in ubuntu 18.04

# Clear PageCache, dentries and inodes.
sync; echo 3 > /proc/sys/vm/drop_caches

Example 4: clear cache manjaro

sudo pacman -Sc

Example 5: linux drop caches

# sync; echo 3 > /proc/sys/vm/drop_caches