4.4BSD/usr/share/man/cat5/group.0

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GROUP(5)                    BSD Programmer's Manual                   GROUP(5)

NNAAMMEE
     ggrroouupp - format of the group permissions file

DDEESSCCRRIIPPTTIIOONN
     The file <_/_e_t_c_/_g_r_o_u_p> consists of newline separated ASCII records, one
     per group, containing four colon `:' separated fields. These fields are
     as follows:
           group     Name of the group.
           passwd    Group's _e_n_c_r_y_p_t_e_d password.
           gid       The group's decimal ID.
           member    Group members.

     The _g_r_o_u_p field is the group name used for granting file access to users
     who are members of the group.  The _g_i_d field is the number associated
     with the group name.  They should both be unique across the system (and
     often across a group of systems) since they control file access.  The
     _p_a_s_s_w_d field is an optional _e_n_c_r_y_p_t_e_d password.  This field is rarely
     used and an asterisk is normally placed in it rather than leaving it
     blank.  The _m_e_m_b_e_r field contains the names of users granted the priv-
     iledges of _g_r_o_u_p. The member names are separated by commas with out
     spaces or newlines.  A user is automatically in a group if that group was
     specified in their _/_e_t_c_/_p_a_s_s_w_d entry and does not need to be added to
     that group in the _/_e_t_c_/_g_r_o_u_p _f_i_l_e_.

FFIILLEESS
     /etc/group

SSEEEE AALLSSOO
     setgroups(2),  initgroups(3),  crypt(3),  passwd(1),  passwd(5)

BBUUGGSS
     The passwd(1) command does not change the ggrroouupp passwords.

HHIISSTTOORRYY
     A ggrroouupp file format appeared in Version 6 AT&T UNIX.

4.4BSD                           June 5, 1993                                1