sysusers.d/README

   1 Files in this directory contain configuration for systemd-sysusers, a program
   2 to allocate system users and groups.
   3
   4 See man:sysusers.d(5) for explanation of the configuration file format, and
   5 man:systemd-sysusers(8) for a description of when and how this configuration is
   6 applied.
   7
   8 Use 'systemd-analyze cat-config sysusers.d' to display the effective config.