Linux 修改时区（PDT修改为CST）

方法1：

Linux 修改时区

本文链接：https://blog.csdn.net/Aritem/article/details/79213306

命令：tzselect

按照顺序依次输入5,9,1,1

[root@master conf]# tzselect -select a time zone
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
 ) Africa
 ) Americas
 ) Antarctica
 ) Arctic Ocean
 ) Asia
 ) Atlantic Ocean
 ) Australia
 ) Europe
 ) Indian Ocean
) Pacific Ocean
) none - I want to specify the time zone using the Posix TZ format.

#?     ------这里选5  亚洲

Please select a country.
 ) Afghanistan          ) Israel            ) Palestine
 ) Armenia          ) Japan            ) Philippines
 ) Azerbaijan          ) Jordan            ) Qatar
 ) Bahrain          ) Kazakhstan        ) Russia
 ) Bangladesh          ) Korea (North)        ) Saudi Arabia
 ) Bhutan          ) Korea (South)        ) Singapore
 ) Brunei          ) Kuwait            ) Sri Lanka
 ) Cambodia          ) Kyrgyzstan        ) Syria
 ) China          ) Laos            ) Taiwan
) Cyprus          ) Lebanon            ) Tajikistan
) East Timor          ) Macau            ) Thailand
) Georgia          ) Malaysia            ) Turkmenistan
) Hong Kong          ) Mongolia            ) United Arab Emirates
) India          ) Myanmar (Burma)        ) Uzbekistan
) Indonesia          ) Nepal            ) Vietnam
) Iran          ) Oman            ) Yemen
) Iraq          ) Pakistan

#?     -------这里选9   中国

Please select one of the following time zone regions.
) Beijing Time
) Xinjiang Time

#?     这里选1    北京
 
The following information has been given:

    China
    Beijing Time

Therefore TZ='Asia/Shanghai' will be used.
Local time is now:    Wed Aug  :: CST .
Universal Time is now:    Wed Aug  :: UTC .
Is the above information OK?
) Yes
) No

#?      这里选1   yes确认保存

You can make this change permanent for yourself by appending the line
    TZ='Asia/Shanghai'; export TZ
to the file '.profile' in your home directory; then log out and log in again.

Here is that TZ value again, this time on standard output so that you
can use the /usr/bin/tzselect command in shell scripts:
Asia/Shanghai
[root@master conf]# date
Wed Aug  :: PDT 

改到这里此时时区还是PDT，需要修改profile文件

[root@master conf]# vim /etc/profile
 # time
 TZ='Asia/Shanghai'
 export TZ
[root@master conf]# source /etc/profile

此时时区已经变为CST

[root@master conf]# date
Wed Aug  :: CST 

方法2：

修改Linux系统时间EDT改为CST

 文章链接：https://www.cnblogs.com/senlinyang/p/10978506.html

今天发现一台服务器时间比北京时间慢 12 个小时，使用 date 命令后发现是：

2019年 06月 04日 星期二 :: EDT

EDT 时间即美国东部时间。这里要改为北京时间即可：

mv /etc/localtime /etc/localtime.bak
ln -s /usr/share/zoneinfo/Asia/Shanghai  /etc/localtime

然后再次 date 查看日期：

2019年 06月 05日 星期三 :: CST

时间就变成北京时间了.