This is a debugging feature. It's sometimes incredibly useful to be able to run a second instance of homed that operates on another dir than /home/. Specifically, if you build homed from the source tree you can now run an instance of it pretty reasonably directly from the build tree via: sudo SYSTEMD_HOME_DEBUG_SUFFIX=foo SYSTEMD_HOMEWORK_PATH=$(pwd)/build/systemd-homework SYSTEMD_HOME_ROOT=/home/foo ./build/systemd-homed And then talk to it via sudo SYSTEMD_HOME_DEBUG_SUFFIX=foo homectl … (you might need to tweak your dbus policy for this to work fully though)
System and Service Manager
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