Add new scripts

bin/unmounter

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+lsblk_output="$(lsblk -nrpo "name,type,size,mountpoint")"
+mounted_drives="$(echo "$lsblk_output" | awk '($2=="part"||$2="crypt")&&$4!~/\/boot|\/home$|SWAP/&&length($4)>1{printf "%s (%s)\n",$4,$3}')"
+
+all_unmountable="$(echo "$mounted_drives" | sed "/^$/d;s/ *$//")"
+test -n "$all_unmountable"
+
+selected="$(echo "$all_unmountable" | dmenu -i -p "Unmount which drive?")"
+selected="${selected%% *}"
+test -n "$selected"
+
+sudo -A umount -l "/${selected#*/}"
+notify-send "Device unmounted" "$selected has been unmounted."
+
+# Close the selected drive if decrypted.
+cryptid="$(echo "$lsblk_output" | grep "/${selected#*/}$")"
+cryptid="${cryptid%% *}"
+test -b /dev/mapper/"${cryptid##*/}"
+sudo -A cryptsetup close "$cryptid"
+
+notify-send "Device dencryption closed" "Drive is now securely locked again."