Connections to remote host lsof

Binaries and libs of a PID lsof -p <pid> -a -d txt,mem Count open fds of a PID lsof -nP -p <pid> | wc -l List open files by process lsof -p $(pgrep nginx) | head -30 Who is using a port lsof -i :8080 List all network connections lsof -i -n -P