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SUBUID(5)                          File Formats and Conversions                         SUBUID(5)

NAME
       subuid - the subordinate uid file

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

       ·   login name

       ·   numerical subordinate user ID

       ·   numerical subordinate user ID count

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

       Multiple ranges may be specified per user.

FILES
       /etc/subuid
           Per user subordinate user IDs.

       /etc/subuid-
           Backup file for /etc/subuid.

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

shadow-utils 4.2                            03/29/2016                                  SUBUID(5)

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