#!/bin/bash
while :
do
cat <<-EOF
+-------------------------------------------------------------------------+
| System_tools V1.0 |
+-------------------------------------------------------------------------+
| a. Stop And Disabled Firewalld. |
| b. 修改主机名. |
| c. 检查网络连通性. |
| d. 统一网卡名为eth. |
| e. 修改ssh配置文件。 |
| f. 配置yum源仓库。 |
| g. 创建普通用户并提权。 |
| h. 300秒不操作自动注销root账户。 |
| i. 时间同步。 |
| q. 退出。 |
+-------------------------------------------------------------------------+
EOF
network_dir="/etc/sysconfig/network-scripts/"
sshd_dir="/etc/ssh/"
network_name=ip a | grep '^2:' |awk -F "[ :]" '{print $3}'
stop_firewalld()
{
echo "-----------Stop And Disabled Firewalld and selinux---------"
systemctl stop firewalld
systemctl disable firewalld &> /dev/null
setenforce 0
sed -i "/^\bSELINUX\b/c SELINUX=disabled" /etc/selinux/config
if [ $? -eq 0 ]
then
echo "firewalld and selinux stop successed"
else
echo "firewalld and selinux stop failed"
exit
fi
}
username() { read -p "请输入你要修改的主机名" user hostnamectl set-hostname $user echo "你修改的主机名为 $user" }
network_tools()
{
ping -c1 www.baidu.com &> /dev/null
if [ $? -eq 0 ]
then
echo "你的网络状况良好"
else
echo "你的网络不好使，需要重新配置"
read -p "请输入你的网卡名称" name
read -p "请输入你的IP地址：" ip1
ip2=echo $ip1 |awk -F"." 'BEGIN{FS="."; OFS="."}{print $1,$2,$3}'
cat > ${network-dir}ifcfg-${name} << EOF
TYPE=Ethernet
BOOTPROTO=static
NAME=$name
DEVICE=$name
ONBOOT=yes
IPADDR=$ip1
GATEWAY=$ip2
EOF
ping c1 www.baidu.com &> /dev/null
if [ $? -eq 0 ]
then
echo "网络已恢复"
else
echo "没救了"
fi
fi
}
eth()
{
echo "---------正在配置请稍等----------"
mv ${network_dir}ifcfg-${network_name} ${network_dir}ifcfg-eth0
sed -i '/^NAME/c NAME=eth0' ${network_dir}ifcfg-eth0
sed -i '/^DEVICE/c DEVICE=eth0' ${network_dir}ifcfg-eth0
echo 'GRUB_CMDLINE_LINUX="...... net.ifnames=0"' >> /etc/sysconfig/grub
grub2-mkconfig -o /boot/grub2/grub.cfg &> /dev/null
echo "请重启使网卡名生效"
}
ssh_tools()
{
sed -i '/\bPort\b/c Port=22' ${sshd_dir}sshd_config
while :
do
read -p "确定禁止root用户远程登录 y/n" login
case $login in
y)
sed -i '/#PermitRootLogin/c PermitRootLogin = NO' ${sshd_dir}sshd_config
;;
n)
exit
;;
)
echo "请按照提示输入内容！！！"
;;
esac
done
}
yum_install()
{
echo "--------正在部署yum源仓库请喝口水耐心等待---------"
rm -rf /etc/yum.repos.d/
curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo &> /dev/null
yum -y install wget &> /dev/null
if [ $? -eq 0 ]
then
echo "快要成功了"
else
echo "网络错误，请检查网络"
exit
fi
wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo &> /dev/null
echo "---------正在清空缓存，请耐心等待！----------"
yum clean all &> /dev/null
echo "-----------正在重新加载，请耐心等待！-----------"
yum makecache &> /dev/null
echo "------------yum 配置 successed------------"
}
user(){
read -p "请输入你要创建的用户名：" n
read -p "请输入用户名的密码" mima
useradd $n && echo "$mima" |passwd --stdin $n &> /dev/null
usermod -aG wheel $n
if [ $? -eq 0 ]
then
echo "用户创建并提权成功"
else
echo "用户创建失败"
exit
fi
}
root_power_off(){ sed -i '/HISTSIZE=/a\TMOUT=300' /etc/profile && echo "-----successful------" #300s不操作自动注销root账户 }
time_ntp(){ #将/usr/share/zoneinfo/Asia/Shanghai 拷贝到 /etc/localtime #说有违禁词不让我写拷贝这个命令 #cp -f /usr/share/zoneinfo/Asia/Shanghai /etc/localtime yum -y install ntpdate &>/dev/null ntpdate 10.180.4.204 echo "时间同步成功"
}
read -p "请输入你要选择的参数：" a case $a in a) stop_firewalld ;; b) username ;; c) network_tools ;; d) eth ;; e) ssh_tools ;; f) yum_install ;; g) user ;; h) root_power_off ;; i) time_ntp ;; q) exit ;; *) echo "请按照上方提示输入！！！" ;;
esac done
