Add 'cleanup/' from commit 'b1a5f3d704'

git-subtree-dir: cleanup
git-subtree-mainline: 6b9a2380ce
git-subtree-split: b1a5f3d704

cleanup/cleanup.sh

@@ -0,0 +1,14 @@
+#! /bin/sh
+
+rm -rf /root/.cache /root/.rnd
+find /tmp -type d -name 'systemd-*-systemd-timesyncd.service*' -exec rm -rf '{}' '+'
+find /var/tmp -type d -name 'systemd-*-systemd-timesyncd.service*' -exec rm -rf '{}' '+'
+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=dsync status=progress bs=4M;
+rm -f /emptyfile;
+systemctl poweroff