linux_tcp_port_scan_oneline

## tcp one port
ip=192.168.175.140 ; port=80 ; timeout 1 bash -c "</dev/tcp/$ip/$port && echo $ip port tcp/$port open || echo $ip port tcp/$port closed" 2>/dev/null || echo $ip port tcp/$port connection timeout 2>/dev/null

## udp range port
ip=192.168.175.140 ; for port in $(seq 1 65535); do timeout 1 bash -c "</dev/tcp/$ip/$port && echo $ip port tcp/$port open || echo $ip port tcp/$port closed" 2>/dev/null || echo $ip port tcp/$port connection timeout 2>/dev/null; done