|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:
•numerical subordinate user ID
•numerical subordinate user ID countThis 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.
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).