Timothy M Butterworth <timothy.m.butterwo...@gmail.com> writes: > When I run `sudo echo 1 > /proc/sys/vm/drop_caches` I receive the following > error: bash: /proc/sys/vm/drop_caches: Permission denied
Unfortunately, it's your current shell and not root who does the redirection in this case so no permissions. For a longer explanation see https://www.reddit.com/r/linux4noobs/comments/qq76qo/sudo_echo_vs_echo_from_the_root_shell/ A proposed alternative from there is to use tee, like this: echo 1 | sudo tee /proc/sys/vm/drop_caches
