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Annotation of coherent/a/usr/man/COHERENT/passwd, revision 1.1.1.1

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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.
                     16: 
                     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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                     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).
                     32: 
                     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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                     49:         passwd remacc
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                     51: 
                     52: ***** See Also *****
                     53: 
                     54: file formats, passwd (command)
                     55: 
                     56: ***** Notes *****
                     57: 
                     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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                     68: 
                     69: passwd                     File Format                     passwd
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                     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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