ubuntu 时间更正

root@focal2-2:~# ntpdate ntp1.aliyun.com
27 Jul 06:03:10 ntpdate[7293]: adjust time server 120.25.115.20 offset 0.000071 sec
root@focal2-2:~# date
Mon Jul 27 06:03:32 UTC 2020
root@focal2-2:~# date -R
Mon, 27 Jul 2020 06:04:17 +0000
root@focal2-2:~#  tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent, ocean, "coord", or "TZ".
 1) Africa
 2) Americas
 3) Antarctica
 4) Asia
 5) Atlantic Ocean
 6) Australia
 7) Europe
 8) Indian Ocean
 9) Pacific Ocean
10) coord - I want to use geographical coordinates.
11) TZ - I want to specify the timezone using the Posix TZ format.
#? 5
Please select a country whose clocks agree with yours.
1) Bermuda
2) Cape Verde
3) Falkland Islands
4) Faroe Islands
5) Iceland
6) Portugal
7) South Georgia & the South Sandwich Islands
8) Spain
#? quit
Please enter a number in range.
#? q
Please enter a number in range.
#? b
Please enter a number in range.
#? ^C
root@focal2-2:~# date -R
Mon, 27 Jul 2020 06:05:15 +0000
root@focal2-2:~# tzselect
Please identify a location so that time zone rules can be set correctly.
Please select a continent, ocean, "coord", or "TZ".
 1) Africa
 2) Americas
 3) Antarctica
 4) Asia
 5) Atlantic Ocean
 6) Australia
 7) Europe
 8) Indian Ocean
 9) Pacific Ocean
10) coord - I want to use geographical coordinates.
11) TZ - I want to specify the timezone using the Posix TZ format.
#? 4
Please select a country whose clocks agree with yours.
 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 timezones.
1) Beijing Time
2) Xinjiang Time
#? 1

The following information has been given:

        China
        Beijing Time

Therefore TZ='Asia/Shanghai' will be used.
Selected time is now:   Mon Jul 27 14:05:47 CST 2020.
Universal Time is now:  Mon Jul 27 06:05:47 UTC 2020.
Is the above information OK?
1) Yes
2) No
#? yes
Please enter a number in range.
#? 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@focal2-2:~# date -R
Mon, 27 Jul 2020 06:06:39 +0000
root@focal2-2:~# date
Mon Jul 27 06:06:46 UTC 2020
root@focal2-2:~# ntpdate cn.pool.ntp.org
27 Jul 06:08:18 ntpdate[7348]: adjust time server 193.182.111.14 offset -0.011013 sec
root@focal2-2:~# date
Mon Jul 27 06:08:26 UTC 2020
root@focal2-2:~# hwclock --systohc
root@focal2-2:~# date 
Mon Jul 27 06:09:03 UTC 2020
root@focal2-2:~# ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
root@focal2-2:~# date 
Mon Jul 27 14:09:33 CST 2020
root@focal2-2:~# 

 

 

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@focal:/etc/frr# date
Mon Jul 27 06:11:29 UTC 2020
root@focal:/etc/frr# ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
root@focal:/etc/frr# date
Mon Jul 27 14:11:41 CST 2020
root@focal:/etc/frr#