Add hash-util, add iso generation

bin/hash-util.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env sh
+
+# Function to display usage information
+usage() {
+    echo "Usage: $0 --path <file_path> --hash <sha256_hash>"
+    echo
+    echo "Options:"
+    echo "  --path    Path to the file to be hashed."
+    echo "  --hash    The expected SHA256 hash."
+    echo "  --help    Display this help message."
+    exit 1
+}
+
+# Parse command-line arguments
+while [[ "$#" -gt 0 ]]; do
+    case "$1" in
+        --path)
+            FILE_PATH="$2"
+            shift
+            ;;
+        --hash)
+            EXPECTED_HASH="$2"
+            shift
+            ;;
+        --help)
+            usage
+            ;;
+        *)
+            echo "Unknown option: $1"
+            usage
+            ;;
+    esac
+    shift
+done
+
+# Check if both file path and hash are provided
+if [ -z "${FILE_PATH}" ] || [ -z "${EXPECTED_HASH}" ]; then
+    echo "Error: Both --path and --hash arguments are required."
+    usage
+fi
+
+# Check if the file exists
+if [ ! -f "${FILE_PATH}" ]; then
+    echo "Error: File not found at '${FILE_PATH}'"
+    exit 1
+fi
+
+# Calculate the SHA256 hash of the file
+CALCULATED_HASH=$(sha256sum "${FILE_PATH}" | awk '{print $1}')
+
+# Compare the calculated hash with the expected hash
+if [ "${CALCULATED_HASH}" == "${EXPECTED_HASH}" ]; then
+    echo "✅ Success: Hashes match."
+    echo "File: ${FILE_PATH}"
+    echo "Hash: ${CALCULATED_HASH}"
+else
+    echo "❌ Error: Hashes do not match."
+    echo "File:            ${FILE_PATH}"
+    echo "Expected Hash:   ${EXPECTED_HASH}"
+    echo "Calculated Hash: ${CALCULATED_HASH}"
+    exit 1
+fi
+
+exit 0