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sudo lsof -PiTCP -sTCP:LISTEN
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
GitHub 850 grgarside 6u IPv4 0x23c345381d089301 0t0 TCP localhost:25035 (LISTEN)
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$ npx kill-port 3000 8080 8081
Process on port 3000 killed
Process on port 8080 killed
Process on port 8081 killed