Translations:Systemd/289/en
From Gentoo Wiki
User units can be located at multiple places. Users are allowed to place them to $XDG_CONFIG_HOME/systemd/user/. Installed packages place them to /usr/lib/systemd/user/.
User units can be located at multiple places. Users are allowed to place them to $XDG_CONFIG_HOME/systemd/user/. Installed packages place them to /usr/lib/systemd/user/.