今天在yum install 或者yum update的时候都提示段错误(core dumped)，然后终止运行了。

复制代码代码如下:
[root@lee ~]# yum -y update
Loaded plugins: fastestmirror, refresh-packagekit
Determining fastest mirrors
* base: mirror.esocc.com
* extras: mirror.esocc.com
* soluslabs: mirror.us1.soluslabs.net
* updates: mirror.esocc.com
base | 3.7 kB 00:00
base/primary_db | 4.4 MB 00:14
extras | 3.4 kB 00:00
extras/primary_db | 18 kB 00:00
soluslabs | 951 B 00:00
soluslabs/primary | 11 kB 00:00
段错误 (core dumped)

到谷歌上找各种大虾的文章还是无济于事，只好认真查看错误！首先我确定了不是因为Python版本的原因，因为之前安装了一个Python2.7.4。

复制代码代码如下:
# vim /usr/bin/yum

查看第一行

复制代码代码如下:
#!/usr/bin/python2.6
import sys
try:
import yum
except ImportError:
print sys.stderr, """\
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

%s

Please install a package which provides this module, or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python, which is:
%s

If you cannot solve this problem yourself, please go to
the yum faq at:
http://yum.baseurl.org/wiki/Faq

""" % (sys.exc_value, sys.version)
sys.exit(1)

sys.path.insert(0, '/usr/share/yum-cli')
try:
import yummain
yummain.user_main(sys.argv[1:], exit_code=True)
except KeyboardInterrupt, e:
print sys.stderr, "\n\nExiting on user cancel."
sys.exit(1)

第一行是

复制代码代码如下:
#!/usr/bin/python2.6

直接看这个Python2.6是不是有问题

复制代码代码如下:
[root@lee ~]# /usr/bin/python2.6 -V
Python 2.6.6

正确识别版本号，没问题。在yum clean all 以后都无济于事的时候，我突然想到会不会/etc/yum.repos.d/目录下多了东西？

复制代码代码如下:
[root@lee ~]# ls /etc/yum.repos.d/
CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo soluslabs.repo

发现里边有一个soluslabs.repo跟我yum命令报错的地方都是一个资源库，看来问题就在这了。

复制代码代码如下:
soluslabs | 951 B 00:00
soluslabs/primary | 11 kB 00:00
段错误 (core dumped)

段错误的上一行是soluslabs，于是我直接rm它

复制代码代码如下:
# rm -f /etc/yum.repos.d/soluslabs.repo

然后再clean下

复制代码代码如下:
# yum clean all

好滴，我们再回到熟悉的yum update

复制代码代码如下:
[root@lee ~]# yum -y update
Loaded plugins: fastestmirror, refresh-packagekit
Determining fastest mirrors
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirrors.tuna.tsinghua.edu.cn
base | 3.7 kB 00:00
base/primary_db | 4.4 MB 00:20
extras | 3.4 kB 00:00
extras/primary_db | 18 kB 00:00
updates | 3.4 kB 00:00
updates/primary_db | 3.9 MB 00:13
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package bash.x86_64 0:4.1.2-14.el6 will be updated
---> Package bash.x86_64 0:4.1.2-15.el6_4 will be an update
---> Package bind-libs.x86_64 32:9.8.2-0.17.rc1.el6_4.4 will be updated

搞定，收工！

另一个解决方法：

使用yum命令安装东西或者yum update时都提示以下错误：

复制代码代码如下:
[root@lee ~]# yum update
Loaded plugins: fastestmirror, refresh-packagekit
Loading mirror speeds from cached hostfile
* base: mirrors.tuna.tsinghua.edu.cn
* extras: mirrors.tuna.tsinghua.edu.cn
* soluslabs: mirror.eu1.soluslabs.net
* updates: mirrors.tuna.tsinghua.edu.cn
段错误 (core dumped)

解决方法：

复制代码代码如下:
[root@lee ~]# rpm -q zlib zlib-devel
zlib-1.2.3-29.el6.x86_64
zlib-devel-1.2.3-29.el6.x86_64
[root@lee ~]# cp /usr/lib64/lib
Display all 1910 possibilities? (y or n)
[root@lee ~]# cp /usr/lib64/libz.so /usr/local/lib64/
[root@lee ~]# cd /usr/local/lib64/
[root@lee lib64]# ln -sf libz.so libz.so.1
[root@lee lib64]# yum clean all

我的系统是CentOS 64位，如果是32位的在赋值libz.so时这么复制

复制代码代码如下:
[root@lee ~] cp /usr/lib/libz.so /usr/local/lib/

然后重新yum update就可以了