/usr/local/bin/python -> /usr/bin/env python
diff --git a/Demo/tkinter/guido/MimeViewer.py b/Demo/tkinter/guido/MimeViewer.py
index 06b7a88..2b98579 100755
--- a/Demo/tkinter/guido/MimeViewer.py
+++ b/Demo/tkinter/guido/MimeViewer.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# View a single MIME multipart message.
# Display each part as a box.
diff --git a/Demo/tkinter/guido/dialog.py b/Demo/tkinter/guido/dialog.py
index 500a73d..62ad3e3 100755
--- a/Demo/tkinter/guido/dialog.py
+++ b/Demo/tkinter/guido/dialog.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# A Python function that generates dialog boxes with a text message,
# optional bitmap, and any number of buttons.
diff --git a/Demo/tkinter/guido/electrons.py b/Demo/tkinter/guido/electrons.py
index 7296955..f3b8008 100755
--- a/Demo/tkinter/guido/electrons.py
+++ b/Demo/tkinter/guido/electrons.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# Simulate "electrons" migrating across the screen.
# An optional bitmap file in can be in the background.
diff --git a/Demo/tkinter/guido/kill.py b/Demo/tkinter/guido/kill.py
index 24335cc..577af8b 100755
--- a/Demo/tkinter/guido/kill.py
+++ b/Demo/tkinter/guido/kill.py
@@ -1,4 +1,4 @@
-#!/usr/local/bin/python
+#! /usr/bin/env python
# Tkinter interface to Linux `kill' command.
from Tkinter import *
diff --git a/Demo/tkinter/guido/mbox.py b/Demo/tkinter/guido/mbox.py
index 3382311..9aea7ee 100755
--- a/Demo/tkinter/guido/mbox.py
+++ b/Demo/tkinter/guido/mbox.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# Scan MH folder, display results in window
diff --git a/Demo/tkinter/guido/rmt.py b/Demo/tkinter/guido/rmt.py
index f9f1785..6e9a828 100755
--- a/Demo/tkinter/guido/rmt.py
+++ b/Demo/tkinter/guido/rmt.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# A Python program implementing rmt, an application for remotely
# controlling other Tk applications.
diff --git a/Demo/tkinter/guido/svkill.py b/Demo/tkinter/guido/svkill.py
index dd80856..1c54e4b 100755
--- a/Demo/tkinter/guido/svkill.py
+++ b/Demo/tkinter/guido/svkill.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# Tkinter interface to SYSV `ps' and `kill' commands.
diff --git a/Demo/tkinter/guido/tkman.py b/Demo/tkinter/guido/tkman.py
index 34ca4a3..70aaae3 100755
--- a/Demo/tkinter/guido/tkman.py
+++ b/Demo/tkinter/guido/tkman.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# Tk man page browser -- currently only shows the Tcl/Tk man pages
diff --git a/Demo/tkinter/www/www1.py b/Demo/tkinter/www/www1.py
index dc30e21..558fd74 100755
--- a/Demo/tkinter/www/www1.py
+++ b/Demo/tkinter/www/www1.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www1.py -- print the contents of a URL on stdout
diff --git a/Demo/tkinter/www/www10.py b/Demo/tkinter/www/www10.py
index def5196..eef5220 100755
--- a/Demo/tkinter/www/www10.py
+++ b/Demo/tkinter/www/www10.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www10.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www11.py b/Demo/tkinter/www/www11.py
index 59b71c0..0b13ce1 100755
--- a/Demo/tkinter/www/www11.py
+++ b/Demo/tkinter/www/www11.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www11.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www12.py b/Demo/tkinter/www/www12.py
index 2e870c4..78884c9 100755
--- a/Demo/tkinter/www/www12.py
+++ b/Demo/tkinter/www/www12.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www12.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www13.py b/Demo/tkinter/www/www13.py
index af9b176..90de016 100755
--- a/Demo/tkinter/www/www13.py
+++ b/Demo/tkinter/www/www13.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www13.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www2.py b/Demo/tkinter/www/www2.py
index d14306a..3501803 100755
--- a/Demo/tkinter/www/www2.py
+++ b/Demo/tkinter/www/www2.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www2.py -- print the contents of a URL on stdout
# - error checking
diff --git a/Demo/tkinter/www/www3.py b/Demo/tkinter/www/www3.py
index eb8b07f..e1b1bc5 100755
--- a/Demo/tkinter/www/www3.py
+++ b/Demo/tkinter/www/www3.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www3.py -- print the contents of a URL on stdout
# - error checking
diff --git a/Demo/tkinter/www/www4.py b/Demo/tkinter/www/www4.py
index 4351004..b916dca 100755
--- a/Demo/tkinter/www/www4.py
+++ b/Demo/tkinter/www/www4.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www4.py -- display the contents of a URL in a Text widget
diff --git a/Demo/tkinter/www/www5.py b/Demo/tkinter/www/www5.py
index 0ea451f..83f6ab9 100755
--- a/Demo/tkinter/www/www5.py
+++ b/Demo/tkinter/www/www5.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www5.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www6.py b/Demo/tkinter/www/www6.py
index a9b0698..a8824fa 100755
--- a/Demo/tkinter/www/www6.py
+++ b/Demo/tkinter/www/www6.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www6.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www7.py b/Demo/tkinter/www/www7.py
index cb4313d..be66dc8 100755
--- a/Demo/tkinter/www/www7.py
+++ b/Demo/tkinter/www/www7.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www7.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www8.py b/Demo/tkinter/www/www8.py
index 868a7ed..097121b 100755
--- a/Demo/tkinter/www/www8.py
+++ b/Demo/tkinter/www/www8.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www8.py -- display the contents of a URL in a Text widget
# - set window title
diff --git a/Demo/tkinter/www/www9.py b/Demo/tkinter/www/www9.py
index 60b46ed..12ca0f3 100755
--- a/Demo/tkinter/www/www9.py
+++ b/Demo/tkinter/www/www9.py
@@ -1,4 +1,4 @@
-#! /usr/local/bin/python
+#! /usr/bin/env python
# www9.py -- display the contents of a URL in a Text widget
# - set window title