| #! /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]), | |