python的版本为_centos 下怎么恢復为默认的python版本

1.下载Python-2.7.3

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#wget

#wget

2.解压

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#tar -jxvf Python-2.7.3.tar.bz2

#tar -jxvf Python-2.7.3.tar.bz2

3.更改工作目录

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#cd Python-2.7.3

#cd Python-2.7.3

4.安装

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#./configure

#make all

#make install

#make clean

#make distclean

#./configure

#make all

#make install

#make clean

#make distclean

5.查看版本信息

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#/usr/local/bin/python2.7 -V

#/usr/local/bin/python2.7 -V

6.建立软连接，使系统默认的 python指向 python2.

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#mv /usr/bin/python /usr/bin/python2.6.6

#ln -s /usr/local/bin/python2.7 /usr/bin/python

#mv /usr/bin/python /usr/bin/python2.6.6

#ln -s /usr/local/bin/python2.7 /usr/bin/python

7.重新检验Python 版本

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#python -V

#python -V

8解决系统 Python 软链接指向 Python2.7 版本后，因为yum是不兼容 Python 2.7的，所以yum不能正常工作，我们需要指定 yum 的Python版本

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#vi /usr/bin/yum

#vi /usr/bin/yum

将文件头部的

#!/usr/bin/python

改成

#!/usr/bin/python2.6.6

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