1GROUP(5) Linux Programmer's Manual GROUP(5)
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6 group - user group file
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9 The /etc/group file is a text file that defines the groups on the sys‐
10 tem. There is one entry per line, with the following format:
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12 group_name:password:GID:user_list
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14 The fields are as follows:
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16 group_name the name of the group.
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18 password the (encrypted) group password. If this field is empty, no
19 password is needed.
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21 GID the numeric group ID.
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23 user_list a list of the usernames that are members of this group,
24 separated by commas.
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27 /etc/group
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30 As the 4.2BSD initgroups(3) man page says: no one seems to keep
31 /etc/group up-to-date.
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34 chgrp(1), gpasswd(1), groups(1), login(1), newgrp(1), sg(1), get‐
35 grent(3), getgrnam(3), gshadow(5), passwd(5)
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38 This page is part of release 4.15 of the Linux man-pages project. A
39 description of the project, information about reporting bugs, and the
40 latest version of this page, can be found at
41 https://www.kernel.org/doc/man-pages/.
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45Linux 2016-10-08 GROUP(5)