diff --git a/py-launcher b/py-launcher
index 83ff79f..49efcf6 100755
--- a/py-launcher
+++ b/py-launcher
@@ -1,6 +1,8 @@
 #!/usr/bin/env python
 
+import os
 import sys
+import re
 import gtk
 import gobject
 
@@ -48,8 +50,13 @@ class Window:
 
 def main(argv):
     w = Window()
-    cmd = w.run()
-    print 'cmd:', cmd
+    cmd = w.run().strip()
+    shell = '/bin/sh'
+    if 'SHELL' in os.environ:
+        shell = os.environ['SHELL']
+    shname = re.sub('.*/', '', shell)
+    if cmd != '':
+        os.execl(shell, shname, '-c', cmd)
 
 if __name__ == "__main__":
     main(sys.argv)