Added the -v option to print the version number.

diff --git a/dus.c b/dus.c
index 5f481d7..4acc517 100644 (file)
--- a/dus.c
+++ b/dus.c
@@ -394,6 +394,7 @@ void usage(FILE *out) {
 /**********************************************************************/
 
 static struct option long_options[] = {
+  { "version", no_argument, 0, 'v' },
   { "ignore-dots", no_argument, 0, 'd' },
   { "reverse-order", no_argument, 0, 'r' },
   { "show-top", no_argument, 0, 't' },
@@ -414,10 +415,15 @@ int main(int argc, char **argv) {
 
   setlocale (LC_ALL, "");
 
-  while ((c = getopt_long(argc, argv, "dfrtl:c:m:hd",
+  while ((c = getopt_long(argc, argv, "vdfrtl:c:m:hd",
                           long_options, NULL)) != -1) {
     switch (c) {
 
+    case 'v':
+      printf("dus version %s (%s)\n", VERSION_NUMBER, UNAME);
+      exit(EXIT_SUCCESS);
+      break;
+
     case 'd':
       ignore_dotfiles = 1;
       break;