fix bug on !

cccli/cli.py

@@ -115,9 +115,13 @@ class Cli(object):
 
     def _exec_command(self, argv):
         '''Execute command'''
+        self.printer.debug("argv: %s"%argv)
         try:
-            if (argv[0] == "!"):
-                p = subprocess.Popen(argv[1:], close_fds=True, shell=True)
+            if (argv[0][0] == "!"):
+                argv[0] = argv[0][1:]
+                if not len(argv[0]):
+                    return
+                p = subprocess.Popen(argv, close_fds=True, shell=True)
                 p.wait()
                 ret = p.returncode
             elif (argv[0] == "?"):