Create util_lib.sh which contains some of the code from upgrade that can be reused to create the restore script

util_lib.sh

@@ -0,0 +1,33 @@
+#!/bin/zsh
+
+LOCK_ROOT=".lock"
+
+# Define a function to create key-value pairs
+create_mapping() {
+    local input="$1"
+    local output="$2"
+    echo "$input|$output"
+}
+
+# Define an array of key-value pairs
+mappings=(
+    $(create_mapping "nvim" "$HOME/.config")
+    $(create_mapping "kitty" "$HOME/.config")
+    $(create_mapping ".zshrc" "$HOME")
+    $(create_mapping "yabai" "$HOME/.config")
+    $(create_mapping "yabai_launcher" "/private/etc/sudoers.d")
+)
+
+function get_latest_lock() {
+    local latest_lock=0
+    for subdir in "$LOCK_ROOT"/*/; do
+        subdir_name=${subdir%"${subdir##*[!/]}"}
+        subdir_name=${subdir_name##*/}
+        
+        if [[ $subdir_name =~ ^[0-9]+$ ]] && ((subdir_name > latest_lock)); then
+            latest_lock=$subdir_name
+        fi
+    done
+
+    echo $latest_lock
+}