root.sh

#!/bin/bash

REGEX=("debian" "ubuntu" "centos|red hat|kernel|oracle linux|alma|rocky" "'amazon linux'" "alpine")
RELEASE=("Debian" "Ubuntu" "CentOS" "CentOS" "Alpine")
PACKAGE_UPDATE=("apt -y update" "apt -y update" "yum -y update" "yum -y update" "apk update -f")
PACKAGE_INSTALL=("apt -y install" "apt -y install" "yum -y install" "yum -y install" "apk add -f")
CMD=("$(grep -i pretty_name /etc/os-release 2>/dev/null | cut -d \" -f2)" "$(hostnamectl 2>/dev/null | grep -i system | cut -d : -f2)" "$(lsb_release -sd 2>/dev/null)" "$(grep -i description /etc/lsb-release 2>/dev/null | cut -d \" -f2)" "$(grep . /etc/redhat-release 2>/dev/null)" "$(grep . /etc/issue 2>/dev/null | cut -d \\ -f1 | sed '/^[ ]*$/d')")

green(){
    echo -e "\033[32m\033[01m$1\033[0m"
}

red(){
    echo -e "\033[31m\033[01m$1\033[0m"
}

yellow(){
    echo -e "\033[33m\033[01m$1\033[0m"
}

[[ $EUID -ne 0 ]] && yellow "请在root用户下运行脚本" && exit 1

for i in "${CMD[@]}"; do
	SYS="$i" && [[ -n $SYS ]] && echo $SYS && break
done

for ((int=0; int<${#REGEX[@]}; int++)); do
	[[ $(echo "$SYS" | tr '[:upper:]' '[:lower:]') =~ ${REGEX[int]} ]] && SYSTEM="${RELEASE[int]}" && [[ -n $SYSTEM ]] && break
done

[[ -z $SYSTEM ]] && red "不支持VPS的当前系统，请使用主流操作系统" && exit 1

${PACKAGE_UPDATE[int]}
${PACKAGE_INSTALL[int]} sudo

sudo lsattr /etc/passwd /etc/shadow >/dev/null 2>&1
sudo chattr -i /etc/passwd /etc/shadow >/dev/null 2>&1
sudo chattr -a /etc/passwd /etc/shadow >/dev/null 2>&1
sudo lsattr /etc/passwd /etc/shadow >/dev/null 2>&1

clear
red "=================================="
echo "                           "
red "    VPS一键修改root密码登录脚本     "
red "          by 小御坂的破站           "
echo "                           "
red "  Site: https://owo.misaka.rest  "
echo "                           "
red "=================================="
echo "                           "
read -p "设置root密码:" password
echo root:$password | sudo chpasswd root
sudo sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/g' /etc/ssh/sshd_config;
sudo sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /etc/ssh/sshd_config;
sudo service sshd restart
green "VPS用户名：root"
green "vps密码：$password"
echo "请妥善保存好登录信息！然后重启VPS确保设置已保存！"