yum命令無法執行

There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:
No module named yum

查詢原因：python升級導致。

解決方法：

程式碼示例:

[email protected] ~]# rpm -qa |grep yum yum-3.2.29-40.el6.centos.noarch
yum-plugin-downloadonly-1.1.30-14.el6.noarch
yum-metadata-parser-1.1.2-16.el6.x86_64
yum-plugin-fastestmirror-1.1.30-10.el6.noarch

[[email protected] ~]# whereis python python: /usr/bin/python2.6
/usr/bin/python /usr/bin/python2.6-config /usr/bin/python.bak
/usr/bin/python2.7 /usr/lib/python2.6 /usr/lib/python2.7
/usr/lib64/python2.6 /usr/local/bin/python2.7
/usr/local/bin/python2.7-config /usr/local/bin/python
/usr/local/lib/python2.7 /usr/include/python2.6
/usr/share/man/man1/python.1.gz

[root@ahlinux ~]# python

> Python 2.7.3 (default, Jul 15 2013, 17:08:12) [GCC 4.4.7 20120313 (Red
> Hat 4.4.7-3)] on linux2 Type "help", "copyright", "credits" or
> "license" for more information.

[root@ahlinux ~]# which yum
/usr/bin/yum
[root@ahlinux ~]# vim /usr/bin/yum
[root@ahlinux ~]# vi /usr/bin/yum-updatest
 

修改：

#!/usr/bin/python

為:

#!/usr/bin/python2.6

如此，再次使用yum安裝依賴包時，一切就按步驟進行了。大功告成。