adding bash port scan

port_scan_without_nmap.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+host=$1
+
+for port in {1..65535}; do
+    timeout .1 bash -c "</dev/tcp/$host/$port &>/dev/null"  &&  echo "port $port is open"
+done
+echo "Done!"