subgid (5)

Leading comments

    Title: subgid
   Author: [FIXME: author] [see http://docbook.sf.net/el/author]
Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
     Date: 08/20/2017
   Manual: File Formats and Conversions
   Source: shadow-utils 4.2
 Language: English

NAME

DESCRIPTION

Each line in /etc/subgid contains a user name and a range of subordinate group ids that user is allowed to use. This is specified with three fields delimited by colons (lq:rq). These fields are:

* login name

* numerical subordinate group ID

* numerical subordinate group ID count

This file specifies the group IDs that ordinary users can use, with the newgidmap command, to configure gid mapping in a user namespace.

Multiple ranges may be specified per user.

FILES

/etc/subgid

Per user subordinate group IDs.

/etc/subgid-

Backup file for /etc/subgid.

SEE ALSO

login.defs(5), newgidmap(1), newuidmap(1), newusers(8), subuid(5), useradd(8), userdel(8), usermod(8), user_namespaces(7).