Zenmap

# zenmap
No protocol specified
No protocol specified
Traceback (most recent call last):
  File "/usr/bin/zenmap", line 94, in <module>
    import zenmapGUI.App
  File "/usr/lib/python2.7/site-packages/zenmapGUI/App.py", line 116, in <module>
    import gtk
  File "/usr/lib/python2.7/site-packages/gtk-2.0/gtk/__init__.py", line 69, in <module>
    _init()
  File "/usr/lib/python2.7/site-packages/gtk-2.0/gtk/__init__.py", line 57, in _init
    warnings.warn(str(e), _gtk.Warning)
gtk.GtkWarning: could not open display