SUBUIDSection: File Formats and Conversions (5)
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NAMEsubuid - the subordinate uid file
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.
- Per user subordinate user IDs.
- Backup file for /etc/subuid.
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