Annotation of coherent/a/usr/man/COHERENT/passwd, revision 1.1

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        !             3: passwd                     File Format                     passwd
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        !             8: Password file format
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        !            11: The file  /etc/passwd holds information  about each user  who has
        !            12: permission to use  the COHERENT system.  This information is read
        !            13: by the commands login and  passwd whenever a user attempts to log
        !            14: in, to ensure that that user  is really himself and not an impos-
        !            15: tor.
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        !            17: /etc/passwd holds one record for each user; each record, in turn,
        !            18: consists of seven colon-separated fields, as follows:
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        !            21:         name:password:user_id:group_id:comments:home_dir:shell
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        !            23: 
        !            24: name  is  the  user's  login  name.   password is  his  encrypted
        !            25: password.  user_id is a unique  number that is also used to iden-
        !            26: tify the  user.  group_id identifies the group  to which the user
        !            27: belongs,  if any.   comments  holds miscellaneous  data, such  as
        !            28: names, telephone numbers,  or office numbers.  home_dir gives the
        !            29: user's home directory.   Finally, shell gives the program that is
        !            30: first executed when the user  logs on; in most instances, this is
        !            31: an interactive shell (default, /bbiinn/sshh).
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        !            33: /etc/passwd includes a special entry for remacc.  This entry con-
        !            34: trols access  to the system by remote devices  (for example, by a
        !            35: modem).  If  an entry in  file /etc/ttys indicates  that a serial
        !            36: line is remote (as set by  placing an `r' as the second character
        !            37: in its entry), COHERENT prompts
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        !            40:         Remote access password:
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        !            43: when a user attempts to log in on that line.
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        !            45: To set the password for remacc, enter the following command while
        !            46: running as the superuser.
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        !            48: 
        !            49:         passwd remacc
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        !            51: 
        !            52: ***** See Also *****
        !            53: 
        !            54: file formats, passwd (command)
        !            55: 
        !            56: ***** Notes *****
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        !            58: /etc/passwd can  be read by anyone: if access  to it were refused
        !            59: to a  user, he could  not log on.  Thus,  the passwords encrypted
        !            60: within it can be read and copied by anyone, and so may be vulner-
        !            61: able to brute-force decryption.  For this reason, close attention
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        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
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        !            69: passwd                     File Format                     passwd
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        !            72: 
        !            73: should be  paid to passwords: they should not  be common words or
        !            74: names, preferably  mix cases or  use unique spellings,  and be at
        !            75: least six characters long.
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        !           130: COHERENT Lexicon                                           Page 2
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