删除重复的ssh脚本

This commit is contained in:
lsy 2024-07-11 20:03:39 +08:00
parent ba7fb89d77
commit bc8a0a27a4

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@ -1,166 +0,0 @@
alter_root_password(){
declare password
read -p "请输入root密码" password
echo "root:$password" |sudo chpasswd
sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config
sudo systemctl restart sshd.service
echo "修改成功当前root密码为$password"
}
install_key(){
declare key
echo "请输入公钥或文件路径:"
echo "默认:$HOME/.ssh/id_rsa.pub"
read -p "回车默认:" key
if [[ -z $key ]];then
key="$HOME/.ssh/id_rsa.pub"
fi
if [[ -f $key ]];then
key=$(cat "$key")
fi
if [[ ! $key =~ ^ssh-(rsa|ecdsa-sha2-nistp[0-9]+|ed25519|dss) ]];then
echo "公钥不合法"
exit 1
fi
mkdir -p "$HOME/.ssh"
echo "$key" > "$HOME/.ssh/authorized_keys"
chmod 600 "$HOME/.ssh/authorized_keys"
chmod 700 "$HOME/.ssh"
sudo sed -i 's/^#\?PubkeyAuthentication.*/PubkeyAuthentication yes/g' /etc/ssh/sshd_config
declare pick2
echo "是否关闭密码登录:"
read -p "输入 n 取消关闭:" pick2
if [[ ! $pick2 =~ [Nn] ]];then
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication no/g' /etc/ssh/sshd_config
fi
systemctl restart sshd.service
echo "密钥安装完成"
}
add_user(){
declare user_name
read -p "请输入你想创建的用户名:" user_name
if id "$user_name" &>/dev/null; then
echo "用户 $user_name 已存在。"
exit 1
fi
useradd -m -s /bin/bash "$user_name"
if grep -q "^$user_name " /etc/sudoers;then
sudo sed -i "s/^#\?$user_name.*/lsy ALL=(ALL) NOPASSWD: ALL/g" /etc/sudoers
else
sudo echo "lsy ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
fi
declare pick
echo "用户登录方式"
echo "y.密码登录"
echo "n.使用root用户公钥"
read -p "默认y请输入" pick
if [[ ! $pick =~ [Nn] ]];then
declare password
read -p "请输入密码:" password
echo "$user_name:$password" |sudo chpasswd
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config;
echo "创建成功"
echo "账号:$user_name"
echo "密码:$password"
else
sudo sed -i 's/^#\?PubkeyAuthentication.*/PubkeyAuthentication yes/g' /etc/ssh/sshd_config
su "$user_name" -c "mkdir -p '/home/$user_name/.ssh'"
sudo cp "/root/.ssh/authorized_keys" "/home/$user_name/.ssh/authorized_keys"
sudo chown lsy:lsy "/home/$user_name/.ssh/authorized_keys"
su "$user_name" -c "chmod 600 '/home/$user_name/.ssh/authorized_keys'"
su "$user_name" -c "chmod 700 '/home/$user_name/.ssh/'"
echo "创建成功"
echo "账号:$user_name"
echo "密钥登录"
fi
declare pick2
echo "是否关闭root登录"
read -p "输入 n 取消关闭:" pick2
if [[ ! $pick2 =~ [Nn] ]];then
sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin no/g' /etc/ssh/sshd_config
echo "root用户登录已关闭"
fi
sudo systemctl restart sshd.service
}
alter_port() {
read -p "请输入需要修改的端口号: " port_number
if [[ -z $port_number ]];then
port_number=22
fi
if ! [[ $port_number =~ ^[0-9]+$ ]] || ! ((port_number > 0 && port_number < 65535)); then
echo "端口不合法"
return 1
fi
if sudo lsof -i :$port_number -t >/dev/null; then
echo "$port_number 端口已被占用"
return 1
fi
sudo sed -i "s/^#\?Port.*/Port $port_number/g" /etc/ssh/sshd_config
sudo systemctl restart sshd.service
echo "端口已经修改为$port_number,记得防火墙放行"
}
if [ "$(id -u)" != "0" ]; then
echo "该脚本必须以root权限运行" 1>&2
exit 1
fi
while true
do
echo "1.修改root密码"
echo "2.安装公钥"
echo "3.创建一个sudo用户"
echo "4.修改ssh端口"
read -p "请输入:" pick
case $pick in
1)
alter_root_password
;;
2)
install_key
;;
3)
add_user
;;
4)
alter_port
;;
*)
exit
;;
esac
echo ""
done