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Annotation of researchv10dc/man/man5/passwd.5, revision 1.1.1.1

1.1       root        1: .TH PASSWD 5
                      2: .CT 1 sa_nonmortals secur
                      3: .SH NAME
                      4: passwd, group \- password and group files
                      5: .SH DESCRIPTION
                      6: The file
                      7: .F /etc/passwd
                      8: has one line for each user with the
                      9: following information:
                     10: .IP
                     11: .nf
                     12: name (login name, contains no upper case)
                     13: encrypted password
                     14: numerical user ID
                     15: numerical group ID
                     16: comp center account number, box number, optional user-id
                     17: initial working directory
                     18: program to use as shell
                     19: .fi
                     20: .PP
                     21: Fields 
                     22: are separated by colons.
                     23: The comp center field is used only when communicating with certain
                     24: systems, and in other installations can contain
                     25: any desired information.
                     26: If the password field is null, no password is demanded;
                     27: if the shell field is null,
                     28: .F /bin/sh
                     29: is used.
                     30: .PP
                     31: The file
                     32: .F /etc/group
                     33: defines the membership of users in permission groups.
                     34: It contains one line for each group with the following
                     35: colon-separated fields:
                     36: .IP
                     37: .nf
                     38: group name
                     39: encrypted password
                     40: numerical group ID
                     41: comma-separated list of all users allowed in the group
                     42: .fi
                     43: .PP
                     44: Each group is separated from the next by a new-line.
                     45: If the password field is null,
                     46: .IR newgrp (1)
                     47: will not demand a password.
                     48: .PP
                     49: Because the passwords are encrypted,
                     50: these files can and do have general read
                     51: permission and can be used, for example,
                     52: to map numerical ids to names.
                     53: .SH FILES
                     54: .F /etc/passwd
                     55: .F /etc/group
                     56: .SH "SEE ALSO"
                     57: .IR newgrp (1),
                     58: .IR getpwent (3), 
                     59: .IR login (8), 
                     60: .IR crypt (3), 
                     61: .IR passwd (1)
                     62: .SH BUGS
                     63: .IR Passwd (1)
                     64: won't change passwords in the group file.

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