Automatically upgrade CentOS Python to the latest official version

1#!/bin/Bash2 3#1, check the current system Python version4 5python_old_version=$ (python-v2>&1|awk '{print $}')6 Echo "the current system Python version is: $python _old_version"7 8#2, check the current system network connection, and be able to access the Python mirror site9 TenCurl-s-k-i http://mirrors.sohu.com/python/|grep ' OK ' >/dev/null One if[ $? !=0 ] A  Then -         EchoUnable to access Python mirror site, check your network connection -Exit1 the fi -  -#3, get the latest version of Python's official information -  +python_last_27version=$ (Curl-s-K http://mirrors.sohu.com/python/|awk-f '/|> ' {print $} ' |grep ' ^2.7.* ' |sort-t '. '-k3-n |tail-1 ' - Echo "The official latest Python2.7 version is: $python _last_27version" +  A#4, compare the current system Python version with the official latest version number at  - if[$python _old_version =$python _last_27version] -  Then -         Echo 'currently the latest version, no upgrade required' -Exit0 - fi in  -#5, download the latest version of the Python installation package to  + Yum Install-YwgetReadLine readline-devel - mkdir-p/tmp/Python_tmp_dir the wget-p/tmp/python_tmp_dir/http://mirrors.sohu.com/python/$python _last_27version/python-$python _last_27version.tar.xz *  $#6, unzip the python source packagePanax Notoginseng  - Tarxf/tmp/python_tmp_dir/python-$python _last_27version.Tar. xz-c/tmp/python_tmp_dir/ the  +#7, pre-compilation preparation: Preparing the installation directory A  the mkdir-p/usr/local/python27 +cd/tmp/python_tmp_dir/python-$python _last_27version -./configure--prefix=/usr/local/python27 $  $#8, compiling and installing Python -  -  Make-j$ (Cat/proc/cpuinfo |grepProcessor |WC-L) && Make Install the  -#9, upgrade Python to the latest official versionWuyi  the MV/usr/bin/python/usr/bin/python$python_old_version - LN-s/usr/local/python27/bin/python/usr/bin/python Wu  -#Ten, clean up files that are generated during installation About  $ RM-rf/tmp/python_tmp_dir/ -  -# One, upgrading only Python by default will cause Yum to not be available and fix the problem automatically here -  A sed-I.'[email protected]#!/usr/bin/[email protected]#!/usr/bin/python'$python _old_version'@'/usr/bin/Yum + sed-I.'[email protected]#!/usr/bin/[email protected]#!/usr/bin/python'$python _old_version'@'/usr/libexec/urlgrabber-ext-down &>/dev/NULL the Yum--version &>/dev/NULL&&Echo "Python Upgrade has no effect on YUM"||Echo "Python upgrade causes YUM to not work"

Automatically upgrade CentOS Python to the latest official version