diff --git a/chkcrontab b/chkcrontab
index e11510e377b9f63fcfff1d4d2eeb75dd63203144..c9573c7a89e5e015f1af01e59573f38ab1490e84 100755
--- a/chkcrontab
+++ b/chkcrontab
@@ -32,12 +32,19 @@ import chkcrontab_lib as check
 
 def main(argv):
   """main program."""
-  if len(argv) != 2:
+  if len(argv) == 1:
     print('ERROR: No crontab file was specified.')
     sys.exit(1)
+
+  if len(argv) > 2:
+    for arg in argv:
+      if '--whitelist' in arg:
+        whitelist_users = arg['--whitelist='.__len__():].split(',')
+
+
   log = check.LogCounter()
   print('Checking correctness of %s' % argv[1])
   return check.check_crontab(argv[1], log)
 
 if __name__ == '__main__':
-  sys.exit(main(sys.argv))
+  sys.exit(main(sys.argv))
\ No newline at end of file