More video work, planning, etc. -- Need to mark things EXPERIMENTAL.

rpi/flash-stock-img.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Flash Raspberry Pi image with headless config (Trixie/Bookworm compatible)
-# Usage: ./flash-stock-img.sh <image.img.xz> <device>
-# Reads settings from config.json in same directory
+# Usage: ./flash-stock-img.sh [-c config.json] <image.img.xz> <device>
+# Reads settings from config.json in same directory (or specify with -c)
 #
 # Uses the same firstrun.sh approach as rpi-imager for compatibility
 
@@ -10,11 +10,31 @@ set -e
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 CONFIG_FILE="$SCRIPT_DIR/config.json"
 
+# ============================================================================
+# Parse options
+# ============================================================================
+usage() {
+    echo "Usage: $0 [-c config.json] <image.img.xz> <device>"
+    echo "  -c FILE  Use alternate config file (default: config.json in script dir)"
+    echo "Example: $0 2025-12-04-raspios-trixie-arm64-lite.img.xz /dev/sdb"
+    echo "Example: $0 -c myconfig.json raspios.img.xz /dev/sdb"
+    exit 1
+}
+
+while getopts "c:h" opt; do
+    case $opt in
+        c) CONFIG_FILE="$OPTARG" ;;
+        h) usage ;;
+        *) usage ;;
+    esac
+done
+shift $((OPTIND - 1))
+
 # ============================================================================
 # Load config
 # ============================================================================
 if [ ! -f "$CONFIG_FILE" ]; then
-    echo "Error: config.json not found at $CONFIG_FILE"
+    echo "Error: config file not found at $CONFIG_FILE"
     exit 1
 fi
 
@@ -38,9 +58,7 @@ echo
 # Validate args
 # ============================================================================
 if [ $# -ne 2 ]; then
-    echo "Usage: $0 <image.img.xz> <device>"
-    echo "Example: $0 2025-12-04-raspios-trixie-arm64-lite.img.xz /dev/sdb"
-    exit 1
+    usage
 fi
 
 IMAGE="$1"