ahjesus linux连接阿里云ubuntu服务器更改默认账号和密码、创建子账户的步骤
<p style='margin: 0px; padding: 5px 0px; outline: none; font-size: 14px; line-height: 30px; font-family: tahoma, arial, "Microsoft YaHei";'>先确保本地Linux服务器SSH服务开启，如果没有开启直接执行指令：service sshd start</p>
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然后我们使用ssh指令进行远程登陆<br>
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<span><u>复制代码</u></span>
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代码如下:</p>
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ssh username@ip-address</div>
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输入passwd指令修改旧密码</p>
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修改默认账号root ----更新：翌日发现安装某些包会出现错误，提示找不到root，遂又改回root账号了</p>
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vi /etc/passwd<br>
按i键进入编辑状态<br>
修改第1行第1个root为新的用户名<br>
按esc键退出编辑状态，并输入:x保存并退出<br>
vi /etc/shadow<br>
按i键进入编辑状态<br>
修改第1行第1个root为新的用户名<br>
按esc键退出编辑状态，并输入:x!强制保存并退出<br>
为了正常使用sudo，需要修改/etc/sudoers的设置，修改方法如下（来自How to add users to /etc/sudoers）：</p>
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运行visudo</p>
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找到root ALL=(ALL) ALL</p>
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在下面添加一行：新用户名 ALL=(ALL) ALL</p>
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:x保存退出</p>
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附：创建子用户远程登陆</p>
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useradd -d /home/admin admin 创建admin</p>
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passwd admin 回车，然后根据提示输入密码</p>
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为相应用户创建一个属于该用户的主目录</p>
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mkdir -p /home/admin</p>
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chown admin:admin/home/admin</p>
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admin账户可以远程登陆了</p>
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