+static void
+err(int exitcode, char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ vfprintf(stderr, format, ap);
+ va_end(ap);
+
+ perror(" ");
+
+ exit(exitcode);
+}
+
+static void
+errx(int exitcode, char *format, ...)
+{
+ va_list ap;
+
+ va_start(ap, format);
+ vfprintf(stderr, format, ap);
+ va_end(ap);
+
+ fputs("\n", stderr);
+
+ exit(exitcode);
+}
+