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Annotation of researchv10dc/man/adm/man1/passwd.1, revision 1.1.1.1

1.1       root        1: .TH PASSWD 1
                      2: .CT 1 comm_term sa_mortals secur
                      3: .SH NAME
                      4: passwd \(mi change login password
                      5: .SH SYNOPSIS
                      6: .B passwd
                      7: [
                      8: .B -an
                      9: ]
                     10: [
                     11: .I name
                     12: ]
                     13: .SH DESCRIPTION
                     14: This command changes a password
                     15: associated with the user
                     16: .IR name
                     17: (your own name by default).
                     18: .PP
                     19: The program prompts for the old password and then for the new one.
                     20: The caller must supply both.
                     21: The new password must be typed twice, to forestall mistakes.
                     22: .PP
                     23: New passwords must be at least four characters long if they use
                     24: a sufficiently rich alphabet and at least six characters long
                     25: if monocase.
                     26: These rules are relaxed if you are insistent enough.
                     27: .PP
                     28: Only the owner of the name or the super-user may change a password;
                     29: the owner must prove he knows the old password.
                     30: .PP
                     31: If the
                     32: .B -a
                     33: option is given,
                     34: .I passwd
                     35: prompts for new values of certain fields of the
                     36: password file entry.
                     37: .PP
                     38: The super-user may use the
                     39: .B -n
                     40: option to install new users.
                     41: The prompts are self-explanatory,
                     42: and most of the defaults obvious.
                     43: A null response to the
                     44: .L UID:
                     45: prompt
                     46: assigns a numeric userid one greater than the
                     47: largest one previously in
                     48: .FR /etc/passwd .
                     49: A null response to
                     50: .L Directory:
                     51: assigns a home directory in
                     52: .FR /usr .
                     53: If the first character of the response to this
                     54: prompt is an asterisk, the remaining characters
                     55: are taken as the name of the new user's home
                     56: directory, and a symbolic link to this directory
                     57: is placed in
                     58: .FR /usr .
                     59: .PP
                     60: If
                     61: .F /etc/stdprofile
                     62: exists, each new user's home directory starts with a file name
                     63: .FR .profile ,
                     64: which is a copy of
                     65: .F /etc/stdprofile
                     66: with
                     67: .B \eN
                     68: replaced by the user's name, and
                     69: .B \eD
                     70: replaced by the name of the home directory.
                     71: .SH FILES
                     72: .F /etc/passwd
                     73: .br
                     74: .F /etc/stdprofile
                     75: .SH "SEE ALSO"
                     76: .IR crypt (3)
                     77: .IR passwd (5)
                     78: .br
                     79: Robert Morris and Ken Thompson,
                     80: `UNIX password security,'
                     81: .I AT&T Bell Laboratories Technical Journal
                     82: 63 (1984) 1649-1672
                     83: .SH BUGS
                     84: The password file information should be kept in a different data structure
                     85: allowing indexed access.

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