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Networking

Find the process of service running/using port​

Using lsof​

lsof -i :22

Using ss​

ss -ltnup 'sport = :22'

Using netstat​

netstat -ltnup
  • l – show only listening sockets
  • t – show TCP connections
  • n – show addresses in a numerical form
  • u – show UDP connections
  • p – show process id/program name