dh_installsysusers - Man Page
install and integrates systemd sysusers files
dh_installsysusers [debhelper options]
dh_installsysusers is a debhelper program that is responsible for installing package maintainer supplied systemd sysusers files.
It also finds the systemd sysusers files installed in a package and generates relevant integration snippets for enabling the users on installation. These snippets are added to the package by dh_installdeb(1).
If the file exist, it will be installed as /usr/lib/sysusers.d/package.conf.
When this parameter is used, dh_installsysusers looks for and installs files named debian/package.name.sysusers instead of the usual debian/package.sysusers.
Furthermore, the file is installed as /usr/lib/sysusers.d/name.conf rather than /usr/lib/sysusers.d/package.conf.
This command is not idempotent. dh_prep(1) should be called between invocations of this command (with the same arguments). Otherwise, it may cause multiple instances of the same text to be added to maintainer scripts.