Home Operation and Maintenance CentOS How to obtain root permissions in centos7

How to obtain root permissions in centos7

Apr 07, 2024 pm 07:57 PM
centos

有以下几种方法可获取 CentOS 7 中的 root 权限: 1. 使用 "su" 运行命令。 2. 使用 "sudo" 运行单个命令。 3. 启用 root 用户并设置密码。注意:使用 root 权限时要谨慎,因为它们可能会损坏系统。

How to obtain root permissions in centos7

如何在 CentOS 7 中获取 root 权限

要获取 CentOS 7 中的 root 权限,有以下几种方法:

1. 使用“su”

“su”命令允许用户在提升特权的情况下运行命令。要使用它,请在终端中输入以下命令:

<code>su</code>
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系统将提示您输入 root 密码。输入密码后,您将获得 root 权限。

2. 使用 sudo

“sudo”命令允许用户以 root 权限运行单个命令。要使用它,请在命令前输入“sudo”,如下所示:

<code>sudo <command></code>
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系统将提示您输入您的用户密码。输入密码后,您可以运行该命令。

3. 启用 root 用户

默认情况下,CentOS 7 中的 root 用户被禁用。要启用它,请按以下步骤操作:

  • 使用“su”或“sudo”命令切换到 root 用户。
  • 编辑 /etc/passwd 文件:
<code>nano /etc/passwd</code>
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  • 找到带有“root”行的内容,并取消注释,如下所示:
<code>root:x:0:0:root:/root:/bin/bash</code>
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  • 保存并退出文件。
  • 使用以下命令设置 root 密码:
<code>passwd root</code>
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输入并确认您的新密码。root 用户现在已启用。

注意:

  • 始终谨慎使用 root 权限,因为它们可能会对您的系统造成损坏。
  • 在完成需要 root 权限的任务后,请使用以下命令退出 root 权限:
<code>exit</code>
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