CentOS7桌面怎么校准时间？（设置时区）
点击右上角设置搜索time，点击下面的搜索结果点击右上角解锁输入账号密码，点Authenticate设置时区为Shanghai, China设置好后，退出即可另外，如果不是桌面版，比如只能通过xshell等工具远程连接，没有界面，还需考虑如何通过命令行设置时间，未完待续。。。。...
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点击右上角设置
搜索time，点击下面的搜索结果
点击右上角解锁
输入账号密码，点Authenticate
设置时区为Shanghai, China
设置好后，退出即可
另外，如果不是桌面版，比如只能通过xshell等工具远程连接，没有界面，还需考虑如何通过命令行设置时间，未完待续。。。。
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文章目录
CentOS7桌面时间校准与设置时区
在日常工作和生活中，正确的时间信息对于很多应用程序、服务器或系统都是至关重要的。特别是在涉及到日志记录、事件排序或者安全证书有效期的场景中，如果时间不准确，可能会导致一些难以预料的问题。因此，对于使用CentOS7的用户来说，了解如何校准时间并设置正确的时区是非常必要的。
1. 校准系统时间
在CentOS7中，我们主要通过timedatectl命令来进行时间管理。下面是一些基本的用法。
1.1 查看当前系统时间和日期
$ timedatectl
这个命令将显示当前的系统时间、日期以及时区等信息。
1.2 设置系统时间
$ sudo timedatectl set-time 'YYYY-MM-DD HH:MM:SS'
其中 'YYYY-MM-DD HH:MM:SS' 需要替换为你想要设置的具体时间。
例如，如果你想要设置时间为2022年10月10日10点10分，你可以执行以下命令：
$ sudo timedatectl set-time '2022-10-10 10:10:00'
1.3 使用NTP服务自动校准时间
网络时间协议（NTP）是一种使计算机时间同步化的协议。它可以使计算机与互联网上的精确时间服务器同步，从而自动调整系统时间。
首先，确认你的系统已经安装了 chrony 包，如果没有，请执行以下命令安装：
$ sudo yum install chrony
然后，启动 chronyd 服务：
$ sudo systemctl start chronyd
并且设置开机自启：
$ sudo systemctl enable chronyd
最后，你可以使用以下命令确认时间同步状态：
$ chronyc tracking
这样，你的系统时间就会自动与网络上的标准时间保持同步。
2. 设置时区
除了校准时间之外，正确设置时区也是非常重要的。
2.1 查看当前系统时区
$ timedatectl | grep "Time zone"
2.2 列出所有可用的时区
$ timedatectl list-timezones
2.3 设置系统时区
$ sudo timedatectl set-timezone 'Region/City'
其中 'Region/City' 是你想要设置的时区，比如 ‘Asia/Shanghai’。
例如，如果你想要设置时区为北京时间，你可以执行以下命令：
$ sudo timedatectl set-timezone 'Asia/Shanghai'
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