Patch #785689: Use basename in usage. Backported to 2.3.
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 8ccc203..e53aa16 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -2167,7 +2167,7 @@
                 print value
 
     except (getopt.error, BadUsage):
-        cmd = sys.argv[0]
+        cmd = os.path.basename(sys.argv[0])
         print """pydoc - the Python documentation tool
 
 %s <name> ...