linux python

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[root@zyl ~]# python -V

Python 2.6.6

2.����Python-2.7.8

[root@zylpython]#wgethttp://python.org/ftp/python/2.7.8/Python-2.7.8.tgz

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root@zyl python]#tar xf Python-2.7.8.tgz

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[root@zylpython]# cd /Python-2.7.8

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[[email protected]]# ./configure --prefix=/usr/local/python27

[[email protected]]#make

[[email protected]]# make install

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[root@zyl ~]#python -V

Python 2.6.6

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[[email protected]]# mv /usr/bin/python /usr/bin/python_old

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[[email protected]]# ln -s /usr/local/python27/bin/python /usr/bin/

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[root@zyl ~]#python -V

Python 2.7.8

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[root@zyl ~]# yum

There was aproblem importing one of the Python modules

required to runyum. The error leading to this problem was:

No module namedyum

Please install apackage which provides this module, or

verify that themodule is installed correctly.

It's possiblethat the above module doesn't match the

current versionof Python, which is:

Python 2.7.8(default, Dec  3 2014, 10:51:34)

[GCC 4.1.220080704 (Red Hat 4.1.2-55)] on linux2

If you cannotsolve this problem yourself, please go to

the yum faq at:

http://wiki.linux.duke.edu/YumFaq

[[email protected]]# vim /usr/bin/yum

#!/usr/bin/python   #�޸Ĵ˴�Ϊ2.6��λ��

[root@zyl ~]# vim/usr/bin/yum

#!/usr/bin/python2.6

[root@zyl~]# yum

Loaded plugins:fastestmirror

You need to givesome command

usage: yum [options]COMMAND

List of Commands:

check-update   Check for available package updates

clean          Remove cached data

deplist        List a package's dependencies

downgrade      downgrade a package

erase          Remove a package or packages fromyour system

groupinfo      Display details about a package group

groupinstall   Install the packages in a group on yoursystem

grouplist      List available package groups

groupremove    Remove the packages in a group from yoursystem

help           Display a helpful usage message

info           Display details about a package orgroup of packages

install        Install a package or packages on yoursystem

list           List a package or groups of packages

localinstall   Install a local RPM

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