SYSTEMD-SOCKET-ACTIVATE(1) systemd-socket-activate SYSTEMD-SOCKET-ACTIVATE(1) NAME systemd-socket-activate - SYNOPSIS systemd-socket-activate [OPTIONS...] daemon [OPTIONS...] systemd-socket-activate daemon [OPTIONS...] --inetd socket socket 3 $LISTEN_FDS systemd-socket-activate socket --listen= socket (consecutive descriptor) systemd-socket-activate (stream socket) --datagram (datagram socket) --seqpacket (sequential packet socket) -l address, --listen=address address "2000"() "127.0.0.1:2001"(:) -a, --accept -d, --datagram (SOCK_DGRAM)(SOCK_STREAM) --seqpacket --seqpacket (SOCK_SEQPACKET)(SOCK_STREAM) --datagram --inetd inetd $LISTEN_FDS -E VAR[=VALUE], --setenv=VAR[=VALUE] VAR "=" "=" systemd-socket-activate --fdname=NAME[:NAME...] FileDescriptorName= sd_listen_fds_with_names(3) -h, --help --version $LISTEN_FDS, $LISTEN_PID, $LISTEN_FDNAMES sd_listen_fds(3) $SYSTEMD_LOG_TARGET, $SYSTEMD_LOG_LEVEL, $SYSTEMD_LOG_COLOR, $SYSTEMD_LOG_LOCATION systemd(1) Example 1. 2000 $ systemd-socket-activate -l 2000 --inetd -a cat Example 2. systemd-journal- gatewayd(8) $ systemd-socket-activate -l 19531 /usr/lib/systemd/systemd-journal-gatewayd systemd(1), systemd.socket(5), systemd.service(5), sd_listen_fds(3), sd_listen_fds_with_names(3), cat(1) man http://www.jinbuguo.com man https://github.com/man-pages-zh/manpages- zh systemd 231 SYSTEMD-SOCKET-ACTIVATE(1)