GSHADOW(5)                (02/07/2020)                 GSHADOW(5)

     NAME
          gshadow - shadowed group file

     DESCRIPTION
          /etc/gshadow contains the shadowed information for group
          accounts.

          This file must not be readable by regular users if password
          security is to be maintained.

          Each line of this file contains the following
          colon-separated fields:

          group name
              It must be a valid group name, which exist on the
              system.

          encrypted password
              Refer to crypt(3) for details on how this string is
              interpreted.

              If the password field contains some string that is not a
              valid result of crypt(3), for instance ! or *, users
              will not be able to use a unix password to access the
              group (but group members do not need the password).

              The password is used when a user who is not a member of
              the group wants to gain the permissions of this group
              (see newgrp(1)).

              This field may be empty, in which case only the group
              members can gain the group permissions.

              A password field which starts with an exclamation mark
              means that the password is locked. The remaining
              characters on the line represent the password field
              before the password was locked.

              This password supersedes any password specified in
              /etc/group.

          administrators
              It must be a comma-separated list of user names.

              Administrators can change the password or the members of
              the group.

              Administrators also have the same permissions as the
              members (see below).

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     GSHADOW(5)                (02/07/2020)                 GSHADOW(5)

          members
              It must be a comma-separated list of user names.

              Members can access the group without being prompted for
              a password.

              You should use the same list of users as in /etc/group.

     FILES
          /etc/group
              Group account information.

          /etc/gshadow
              Secure group account information.

     SEE ALSO
          gpasswd(5), group(5), grpck(8), grpconv(8), newgrp(1).

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