1，修改时区
调整时区使用tzselect
[root@localhost ~]# tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent or ocean.
1) Africa
2) Americas
3) Antarctica
4) Arctic Ocean
5) Asia
6) Atlantic Ocean
7) Australia
8) Europe
9) Indian Ocean
10) Pacific Ocean
11) none - I want to specify the time zone using the Posix TZ format.
#? 5
Please select a country.
1) Afghanistan 18) Israel 35) Palestine
2) Armenia 19) Japan 36) Philippines
3) Azerbaijan 20) Jordan 37) Qatar
4) Bahrain 21) Kazakhstan 38) Russia
5) Bangladesh 22) Korea (North) 39) Saudi Arabia
6) Bhutan 23) Korea (South) 40) Singapore
7) Brunei 24) Kuwait 41) Sri Lanka
8) Cambodia 25) Kyrgyzstan 42) Syria
9) China 26) Laos 43) Taiwan
10) Cyprus 27) Lebanon 44) Tajikistan
11) East Timor 28) Macau 45) Thailand
12) Georgia 29) Malaysia 46) Turkmenistan
13) Hong Kong 30) Mongolia 47) United Arab Emirates
14) India 31) Myanmar (Burma) 48) Uzbekistan
15) Indonesia 32) Nepal 49) Vietnam
16) Iran 33) Oman 50) Yemen
17) Iraq 34) Pakistan
#? 9
Please select one of the following time zone regions.
1) Beijing Time
2) Xinjiang Time
#? 1
The following information has been given:
China
Beijing Time
Therefore TZ='Asia/Shanghai' will be used.
Local time is now: Thu Oct 21 12:22:57 CST 2021.
Universal Time is now: Thu Oct 21 04:22:57 UTC 2021.
Is the above information OK?
1) Yes
2) No
#? 1
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@localhost ~]#
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
注：修改profile文件，添加以下两行：
TZ='Asia/Shanghai'
export TZ
[root@localhost ~]#vim /etc/profile
[r[root@localhost ~]# source /etc/profile
[root@localhost ~]# date
Thu Oct 21 12:25:00 CST 2021
1，使用date查看系统时间。
[root@localhost ~]# date复制
2，查看硬件时间，使用命令hwclock。
[[root@localhost ~]# hwclock复制
3，调整时间为要求的时间。
方法一：先设置系统时间，再根据系统时间同步硬件时间。
[root@localhost ~]# date -s 10/21/2021 [root@localhost ~]# date -s 10:48:50 [roo[root@localhost ~]# hwclock --systohc ##使用系统时间同步硬件时间 [root@localhost ~]# hwclock复制
方法二：先设置硬件时间，再根据硬件时间同步系统时间，或者重启系统。
[root@localhost ~]# hwclock --set --date="10/21/2021 10:56:35" [root@localhost ~]# hwclock [root@localhost ~]# hwclock --hctosys ##使用硬件时间同步系统时间 [root@localhost ~]# date复制
