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#!/bin/bash
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set -e
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# 设置 root 密码
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echo "请输入新的 root 密码："
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passwd root
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# 修改 SSH 配置文件
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SSHD_CONFIG="/etc/ssh/sshd_config"
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# 备份配置文件
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cp $SSHD_CONFIG ${SSHD_CONFIG}.bak.$(date +%F-%T)
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# 开启 root 登录
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sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin yes/' $SSHD_CONFIG
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sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/' $SSHD_CONFIG
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# 重启 SSH 服务
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if command -v systemctl &>/dev/null; then
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    systemctl restart ssh || systemctl restart sshd
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else
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    service ssh restart || service sshd restart
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fi
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echo "✅ Root SSH 登录已开启！"