Update rhel.sh

scripts/install/rhel.sh

@@ -48,6 +48,8 @@ if [ ! -d /root/.acme.sh ];then
     curl https://get.acme.sh | sh
 fi
 
+yum install -y net-tools
+
 SSH_PORT=`netstat -ntpl|grep sshd|grep -v grep | sed -n "1,1p" | awk '{print $4}' | awk -F : '{print $2}'`
 if [ "$SSH_PORT" == "" ];then
     SSH_PORT_LINE=`cat /etc/ssh/sshd_config | grep "Port \d*" | tail -1`