Comment by dundarious

16 hours ago

You can't sudo echo and redirect from the non-sudo shell like that.

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

    sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches'

Also fixed your typo in /proc...

5 comments

dundarious

Also try:

     sudo sysctl -w vm.drop_caches=3

Or more simply, use

   su -c 'echo 3 > /proc/sys/vm/drop_caches'

thanks. copy pasting from the github via my phone, and should have taken the extra few mins