# group(5) - man - phpman

[GROUP(5)](https://www.chedong.com/phpMan.php/man/GROUP/5/markdown)                              Linux Programmer's Manual                             [GROUP(5)](https://www.chedong.com/phpMan.php/man/GROUP/5/markdown)



## NAME
       group - user group file

## DESCRIPTION
       The _/etc/group_ file is a text file that defines the groups on the system.  There is one entry
       per line, with the following format:

           group_name:password:GID:user_list

       The fields are as follows:

       _group_name_
              the name of the group.

       _password_
              the (encrypted) group password.  If this field is empty, no password is needed.

       _GID_    the numeric group ID.

       _user_list_
              a list of the usernames that are members of this group, separated by commas.

## FILES
       _/etc/group_

## BUGS
       As the 4.2BSD [**initgroups**(3)](https://www.chedong.com/phpMan.php/man/initgroups/3/markdown) man page says: no one seems to keep _/etc/group_ up-to-date.

## SEE ALSO
       [**chgrp**(1)](https://www.chedong.com/phpMan.php/man/chgrp/1/markdown),  [**gpasswd**(1)](https://www.chedong.com/phpMan.php/man/gpasswd/1/markdown),  [**groups**(1)](https://www.chedong.com/phpMan.php/man/groups/1/markdown),  [**login**(1)](https://www.chedong.com/phpMan.php/man/login/1/markdown),  [**newgrp**(1)](https://www.chedong.com/phpMan.php/man/newgrp/1/markdown),  [**sg**(1)](https://www.chedong.com/phpMan.php/man/sg/1/markdown),  [**getgrent**(3)](https://www.chedong.com/phpMan.php/man/getgrent/3/markdown),  [**getgrnam**(3)](https://www.chedong.com/phpMan.php/man/getgrnam/3/markdown),
       [**gshadow**(5)](https://www.chedong.com/phpMan.php/man/gshadow/5/markdown), [**passwd**(5)](https://www.chedong.com/phpMan.php/man/passwd/5/markdown), [**vigr**(8)](https://www.chedong.com/phpMan.php/man/vigr/8/markdown)

## COLOPHON
       This  page  is  part  of  release  5.10 of the Linux _man-pages_ project.  A description of the
       project, information about reporting bugs, and the latest version of this page, can be  found
       at <https://www.kernel.org/doc/man-pages/>.



Linux                                        2020-04-11                                     [GROUP(5)](https://www.chedong.com/phpMan.php/man/GROUP/5/markdown)