升级python
cd /home/sanlang/tools
wget http://www.python.org/ftp/python/2.7.6/Python-2.7.6.tgz
gunzip Python-2.7.6.tgz
tar xf Python-2.7.6.tar
cd Python-2.7.6
mkdir -p /application/python2.7.6
./configure --prefix=/application/python2.7.6 --enable-shared
make && make install
mv /usr/bin/python /usr/bin/python_old
ln -s /application/python2.7.6/bin/python2.7 /usr/bin/python升级python导致yum不可用，解决办法
错误1
[root@sanlang Python-2.7.6]# yum -y install lrzsz
/usr/bin/python: error while loading shared libraries: libpython2.7.so.1.0: cannot open shared object file: No such file or directory
解决办法：
vim /usr/bin/yum
#!/usr/bin/python 改成 /usr/bin/python_old
错误2
[root@osanlang bin]# python -V
python: error while loading shared libraries: libpython2.7.so.1.0: cannot open shared object file: No such file or directory
解决办法：
echo "/application/python2.7.6/lib">>/etc/ld.so.conf
ldconfig
python -V
