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			35 lines
		
	
	
	
		
			870 B
		
	
	
	
		
			Python
		
	
	
		
			Executable file
		
	
	
	
	
			
		
		
	
	
			35 lines
		
	
	
	
		
			870 B
		
	
	
	
		
			Python
		
	
	
		
			Executable file
		
	
	
	
	
#! /usr/bin/env python
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# Print From and Subject of messages in $MAIL.
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# Extension to multiple mailboxes and other bells & whistles are left
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# as exercises for the reader.
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import sys, os
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# Open mailbox file.  Exits with exception when this fails.
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try:
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    mailbox = os.environ['MAIL']
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except (AttributeError, KeyError):
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    sys.stderr.write('No environment variable $MAIL\n')
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    sys.exit(2)
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try:
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    mail = open(mailbox)
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except IOError:
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    sys.exit('Cannot open mailbox file: ' + mailbox)
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while 1:
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    line = mail.readline()
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    if not line:
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        break # EOF
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    if line.startswith('From '):
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        # Start of message found
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        print line[:-1],
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        while 1:
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            line = mail.readline()
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            if not line or line == '\n':
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                break
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            if line.startswith('Subject: '):
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                print `line[9:-1]`,
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        print
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