#! /bin/sh

find /var/lib/apt -type f -delete
find /var/cache/apt -type f -delete
find /var/log -type f -regextype posix-extended -regex '.*\.(gz|xz|[0-9])' -delete
truncate -s0 $HOME/.bash_history
[ -w $HOME/.zsh_history ] && truncate -s0 $HOME/.zsh_history
find /var/log -type f -exec truncate -s0 '{}' '+'
dd if=/dev/zero of=/emptyfile oflag=sync bs=4M;
rm -f /emptyfile;
poweroff