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使用tzselect修改时区

[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) east China - Beijing, Guangdong, Shanghai, etc.
2) Heilongjiang (except Mohe), Jilin
3) central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc.
4) most of Tibet & Xinjiang
5) west Tibet & Xinjiang
#? 1

The following information has been given:

        China
        east China - Beijing, Guangdong, Shanghai, etc.

Therefore TZ='Asia/Shanghai' will be used.
Local time is now:      Tue Jul 19 22:05:59 CST 2016.
Universal Time is now:  Tue Jul 19 14:05:59 UTC 2016.
Is the above information OK?
1) Yes
2) No
#? yes
Please enter 1 for Yes, or 2 for 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

把 TZ='Asia/Shanghai'; export TZ 添加到 /etc/profile 文件中

source /etc/profile

1、下载安装包

wget http://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz

2、解压

tar -xzvf Python-3.6.1.tgz

3、进入解压之后的文件夹

cd Python-3.6.1

4、在编译之前现在/use/local下建python3的文件夹作为python3安装路径

mkdir /usr/local/python3

5、开始编译安装

./configure --prefix=/usr/local/python3

6、此时老版本python版本未删除，可以修改老版本的链接

mv /usr/bin/python /usr/bin/python2

7、建立新python的版本链接

ln -s /usr/local/python3/bin/python3 /usr/bin/python

8、这个时候python3就安装完成了，可以下面查看当前python版本

python -V    #输出 Python 3.6.1

9、此时服务器之前的python2.7也是通过 python2 正常使用的

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