yum install -y bash-completion vim lrzsz wget expect net-tools nc nmap tree dos2unix htop iftop iotop unzip telnet sl psmisc nethogs glances bc

hostnamectl set-hostname head1

# .进入配置

vim /etc/hosts

# .光标移到最后一行

o

# .输入ip地址和主机名

10.0.0.100 py3

# .按Esc，冒号:wq，保存并退出

echo "10.0.0.100 head1">>/etc/hosts

iptables -L

iptables -F

systemctl disable firewalld

# .查看防火墙

getenforce

# .临时关闭防火墙

setenforce

# .永久关闭，进入配置

vim /etc/selinux/config

# .修改配置，保存并退出

SELINUX = disabled