Netstat

$ netstat -natupe
-bash: netstat: command not found

Install netstat command

$ apt install net-tools

Result

$ netstat  -natupe
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       User       Inode      PID/Program name
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      0          29709      913/sshd