diff --git a/how-to-create-encrypted-paper-backup/cleanup.sh b/how-to-create-encrypted-paper-backup/cleanup.sh
new file mode 100755
index 0000000..1cb8d40
--- /dev/null
+++ b/how-to-create-encrypted-paper-backup/cleanup.sh
@@ -0,0 +1,53 @@
+#! /bin/bash
+
+set -e
+set -o pipefail
+
+if [ "$1" = "--help" ]; then
+  printf "%s\n" "Usage: cleanup.sh"
+  exit 0
+fi
+
+bold=$(tput bold)
+red=$(tput setaf 1)
+normal=$(tput sgr0)
+
+tput reset
+
+sudo mount -o rw,remount /
+
+printf "%s\n" "Cleaning up…"
+
+sudo apt-get autoclean
+
+sudo rm -fr /etc/ssh/*_host_* || true
+sudo rm -fr /home/pi/.ssh || true
+sudo rm -fr /home/pi/cleanup.sh* || true
+sudo rm -fr /home/pi/test* || true
+sudo rm -fr /tmp/* || true
+sudo rm -fr /var/cache/apt/archives/* || true
+sudo rm -fr /var/lib/dhcpcd5/* || true
+sudo rm -fr /var/log/* || true
+sudo rm -fr /var/tmp/* || true
+
+printf "%s\n" "Done"
+
+coutdown() {
+  tput rc
+  tput ed
+  second_s="seconds"
+  if [ "$1" = "1" ]; then
+    second_s="second"
+  fi
+  printf "$bold%s$normal" "Rebooting in $1 $second_s"
+}
+
+tput sc
+
+for ((index=10; index > 0; index--))
+do
+  coutdown $index
+  sleep 1
+done
+
+sudo systemctl reboot
diff --git a/how-to-create-encrypted-paper-backup/cleanup.sh.sig b/how-to-create-encrypted-paper-backup/cleanup.sh.sig
new file mode 100644
index 0000000..e83bca7
--- /dev/null
+++ b/how-to-create-encrypted-paper-backup/cleanup.sh.sig
@@ -0,0 +1,16 @@
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