]> subgid 5 File Formats and Conversions shadow-utils &SHADOW_UTILS_VERSION; subgid the subordinate gid file Each line in /etc/subgid contains a user id and a range of suboridinate 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 group IDs to be that each user may use with the newgidmap command that ordinary users can use to configure gid mapping in a user namespace. Multiple ranges may be specified per user ID. /etc/subgid Per user subordinate group IDs. /etc/subgid- Backup file for /etc/subgid. subuid5 , logindefs5 , newuidmap1 , newgidmap1 , usermod8 ,