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[ 源代码： socket-activate ]
软件包：socket-activate（0.1-1）
Run a socket-activated daemon with minimal dependencies
socket-activate makes it possible to use socket-activated services on Unix-based systems that don't have systemd installed at all.
It implements the environment variable and file descriptor convention described in sd_listen_fds(3) without using any external code or dependencies from systemd. It only depends on python3 itself.