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Varlink – IPC to replace D-Bus gradually in systemd
The Varlink Website
Varlink is an interface description format and protocol that aims to make services accessible to both humans and machines in the simplest feasible way. Varlink is plain-text, type-safe, discoverable, self-documenting, remotable, testable, easy to debug. This should match the PID of the started service, otherwise everything should be ignored.LISTEN_FDNAMES LISTEN_FDNAMES=other:varlink A colon separated list of names of the passed file descriptors.
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