centos 7 modify sshd | prohibit root login and sshd port script definition

[root@localhost ~]# useradd wwweee000
[root@localhost ~]# passwd wwweee000
Changing password for user wwweee000.
New password:
BAD PASSWORD: The password is a palindrome
Retype new password:
passwd: all authentication tokens updated successfully.

[root@localhost ~]# cat -n /etc/ssh/sshd_config|grep "Port *"
  17 #Port 22
  100 #GatewayPorts no
[root@localhost ~]# cat /etc/ssh/sshd_config|grep -n "Port *"
17:#Port 22
100:#GatewayPorts no
[root@localhost ~]# awk "/Port */" /etc/ssh/sshd_config
#Port 22
#GatewayPorts no

[root@localhost ~]# cat /etc/ssh/sshd_config|grep -n "Port\ "      
17:#Port 22
[root@localhost ~]# cat -n /etc/ssh/sshd_config|grep "Port\ "      
  17 #Port 22
[root@localhost ~]# cat /etc/ssh/sshd_config|grep -n "Port\ "      
17:#Port 22
[root@localhost ~]# awk "/Port\ /" /etc/ssh/sshd_config         
#Port 22
[root@localhost ~]# sed -i "17s/#Port 22/Port 22/g" /etc/ssh/sshd_config 
[root@localhost ~]# awk "/Port\ /" /etc/ssh/sshd_config         
Port 22

[root@localhost ~]# sed -i "17s/Port 22/Port 4096/g" /etc/ssh/sshd_config 
[root@localhost ~]# cat /etc/ssh/sshd_config|grep "Port\ "
Port 4096

[root@localhost ~]# cat -n /etc/ssh/sshd_config|grep "PermitRootLogin"
  49 #PermitRootLogin yes
  104 # the setting of "PermitRootLogin without-password".
[root@localhost ~]# sed -i "49s/#PermitRootLogin yes/PermitRootLogin no/g" /etc/ssh/sshd_config
[root@localhost ~]# cat -n /etc/ssh/sshd_config|grep "PermitRootLogin no"
  49 PermitRootLogin no

[root@localhost ~]# systemctl restart sshd.service

#!/bin/bash
sshd_Port=`cat /etc/ssh/sshd_config|grep "Port\ "`
echo "Current sshd port: $sshd_Port"
read -ep "Please enter the connection port of the sshd service (1-65536);
  Please make sure other ports conflict and firewall ports are open for service: "sshd_Port_read
echo "The port number you entered: $sshd_Port_read"
sed -i "s/$sshd_Port/Port $sshd_Port_read/g" /etc/ssh/sshd_config
echo " The port has been set: `cat /etc/ssh/sshd_config|grep "Port\ "`"
sed -i "s/#PermitRootLogin yes/PermitRootLogin no/g" /etc/ssh/sshd_config
systemctl restart sshd.service
exit 0

[root@localhost wwweee000]# firewall-cmd --state 
not running
[root@localhost ~]# sh sshd_config_Port.sh 
  Current sshd port: Port 22
  Please enter the connection port of the sshd service (1-65536)
  Please make sure other ports conflict and firewall ports are open for business: 4096
  The port number you entered: 4096
  The port has been set to: Port 4096