add hg and python

1 files changed, 35 insertions, 0 deletions

diff --git a/sys/src/cmd/python/Demo/scripts/from.py b/sys/src/cmd/python/Demo/scripts/from.py
new file mode 100755
index 000000000..3c04fcd49
--- /dev/null
+++ b/sys/src/cmd/python/Demo/scripts/from.py
@@ -0,0 +1,35 @@
+#! /usr/bin/env python
+
+# Print From and Subject of messages in $MAIL.
+# Extension to multiple mailboxes and other bells & whistles are left
+# as exercises for the reader.
+
+import sys, os
+
+# Open mailbox file.  Exits with exception when this fails.
+
+try:
+    mailbox = os.environ['MAIL']
+except (AttributeError, KeyError):
+    sys.stderr.write('No environment variable $MAIL\n')
+    sys.exit(2)
+
+try:
+    mail = open(mailbox)
+except IOError:
+    sys.exit('Cannot open mailbox file: ' + mailbox)
+
+while 1:
+    line = mail.readline()
+    if not line:
+        break # EOF
+    if line.startswith('From '):
+        # Start of message found
+        print line[:-1],
+        while 1:
+            line = mail.readline()
+            if not line or line == '\n':
+                break
+            if line.startswith('Subject: '):
+                print repr(line[9:-1]),
+        print