Additional Doc Restructure

operations/reference/bash/git-repo-updater.md

@@ -0,0 +1,61 @@
+# Git Repo Updater (Script)
+## Purpose
+Standalone `repo_watcher.sh` script used by the Git Repo Updater container. This script clones or pulls one or more repositories and rsyncs them into destination paths.
+
+For the containerized version and deployment details, see the [Git Repo Updater container doc](../../platforms/containerization/docker/custom-containers/git-repo-updater.md).
+
+## Script
+```sh
+#!/bin/sh
+
+# Function to process each repo-destination pair
+process_repo() {
+    FULL_REPO_URL=$1
+    DESTINATION=$2
+
+    # Extract the URL without credentials for logging and notifications
+    CLEAN_REPO_URL=$(echo "$FULL_REPO_URL" | sed 's/https:\/\/[^@]*@/https:\/\//')
+
+    # Directory to hold the repository locally
+    REPO_DIR="/root/Repo_Cache/$(basename $CLEAN_REPO_URL .git)"
+
+    # Clone the repo if it doesn't exist, or navigate to it if it does
+    if [ ! -d "$REPO_DIR" ]; then
+        curl -d "Cloning: $CLEAN_REPO_URL" $NTFY_URL
+        git clone "$FULL_REPO_URL" "$REPO_DIR" > /dev/null 2>&1
+    fi
+    cd "$REPO_DIR" || exit
+
+    # Fetch the latest changes
+    git fetch origin main > /dev/null 2>&1
+
+    # Check if the local repository is behind the remote
+    LOCAL=$(git rev-parse @)
+    REMOTE=$(git rev-parse @{u})
+
+    if [ "$LOCAL" != "$REMOTE" ]; then
+        curl -d "Updating: $CLEAN_REPO_URL" $NTFY_URL
+        git pull origin main > /dev/null 2>&1
+        rsync -av --delete --exclude '.git/' ./ "$DESTINATION" > /dev/null 2>&1
+    fi
+}
+
+# Main loop
+while true; do
+    # Iterate over each environment variable matching 'REPO_[0-9]+'
+    env | grep '^REPO_[0-9]\+=' | while IFS='=' read -r name value; do
+        # Split the value by comma and read into separate variables
+        OLD_IFS="$IFS"          # Save the original IFS
+        IFS=','                 # Set IFS to comma for splitting
+        set -- $value           # Set positional parameters ($1, $2, ...)
+        REPO_URL="$1"           # Assign first parameter to REPO_URL
+        DESTINATION="$2"        # Assign second parameter to DESTINATION
+        IFS="$OLD_IFS"          # Restore original IFS
+
+        process_repo "$REPO_URL" "$DESTINATION"
+    done
+
+    # Wait for 5 seconds before the next iteration
+    sleep 5
+done
+```