macOs 8012端口

sudo lsof -n -P|grep :8021
launchd       1                  root   33u     IPv4 0x3dfe961f48641ddf         0t0                 TCP 127.0.0.1:8021 (LISTEN)
launchd       1                  root   43u     IPv4 0x3dfe961f48641ddf         0t0                 TCP 127.0.0.1:8021 (LISTEN)

find ~/Library/LaunchAgents /Library/LaunchAgents /Library/LaunchDaemons /System/Library/LaunchAgents /System/Library/LaunchDaemons -name "*.plist" -exec grep -H 8021 "{}" \; 2>/dev/null


/System/Library/LaunchDaemons/com.apple.airportd.plist:                <string>IO80211Controller</string>
/System/Library/LaunchDaemons/com.apple.eapolcfg_auth.plist:    <string>/System/Library/PrivateFrameworks/EAP8021X.framework/Resources/eapolcfg_auth</string>
/System/Library/LaunchDaemons/com.apple.ftp-proxy.plist:            <string>8021</string>