linux普通用户获取管理员权限
<p style='margin: 0px; padding: 5px 0px; outline: none; font-size: 14px; line-height: 30px; font-family: tahoma, arial, "Microsoft YaHei";'>1、添加用户，首先用adduser命令添加一个普通用户，命令如下： <br>
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<span><u>复制代码</u></span>
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代码如下:</div>
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#adduser tommy </p> <p>//添加一个名为tommy的用户<br>
#passwd tommy //修改密码<br>
Changing password for user tommy.<br>
New UNIX password: //在这里输入新密码<br>
Retype new UNIX password: //再次输入新密码<br>
passwd: all authentication tokens updated successfully.</div>
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2、赋予root权限</p>
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方法一： 修改 /etc/sudoers 文件，找到下面一行，把前面的注释（#）去掉<br>
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<span><u>复制代码</u></span>
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代码如下:</div>
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## Allows people in group wheel to run all commands<br>
%wheel ALL=(ALL) ALL</div>
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然后修改用户，使其属于root组（wheel），命令如下：<br>
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<span><u>复制代码</u></span>
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代码如下:</div>
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#usermod -g root tommy</div>
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修改完毕，现在可以用tommy帐号登录，然后用命令 su - ，即可获得root权限进行操作。</p>
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方法二： 修改 /etc/sudoers 文件，找到下面一行，在root下面添加一行，如下所示：<br>
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代码如下:</div>
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## Allow root to run any commands anywhere<br>
root ALL=(ALL) ALL<br>
tommy ALL=(ALL) ALL</div>
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修改完毕，现在可以用tommy帐号登录，然后用命令 su - ，即可获得root权限进行操作。</p>
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方法三： 修改 /etc/passwd 文件，找到如下行，把用户ID修改为 0 ，如下所示：<br>
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<span><u>复制代码</u></span>
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代码如下:</div>
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tommy:x:500:500:tommy:/home/tommy:/bin/bash</div>
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修改后如下<br>
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<span><u>复制代码</u></span>
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代码如下:</div>
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tommy:x:0:500:tommy:/home/tommy:/bin/bash</div>
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保存，用tommy账户登录后，直接获取的就是root帐号的权限。</p>
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