+#!/usr/bin/env nickle
+
+int checksum(string a)
+{
+ int c = 0;
+ for (int i = 0; i < String::length(a); i++)
+ c ^= a[i];
+ return c;
+}
+
+void main()
+{
+ for (int i = 1; i < dim(argv); i++)
+ printf ("$%s*%02x\n", argv[i], checksum(argv[i]));
+}
+
+main();