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今天在安装程序时，发现有一个插件未安装，我就随手敲了一个命令,看都没看

代码如下:

yum remove yum

然后就杯具了...

代码如下:

[root@localhost ~]# yum
-bash: /usr/bin/yum: No such file or directory

 

这个粗心的手误倒不至于让整个系统瘫痪，yum 却无法使用了。于是，我试着折腾了一番

代码如下:

 rpm -ivh  --nodeps http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-fastestmirror-1.1.16-14.el5.centos.1.noarch.rpm  
 rpm -ivh  --nodeps http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-metadata-parser-1.1.2-3.el5.centos.x86_64.rpm  
 rpm -ivh  --nodeps http://mirrors.163.com/centos/5/os/x86_64/CentOS/yum-3.2.22-26.el5.centos.noarch.rpm[/code]
关于rpm --nodeps的解释
[code]
--nodeps                         don't verify package dependencies

接下来，再次尝试输入yum,结果再次出现莫名错误

代码如下:

 [root@localhost ~]# yum
 There was a problem importing one of the Python modules
 required to run yum. The error leading to this problem was:
 
 libxml2.so.2: cannot open shared object file: No such file or directory
 
 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:
 2.4.3 (#1, Nov 11 2010, 13:30:19)  
 [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)]
 
 If you cannot solve this problem yourself, please go to  
 the yum faq at:
 http://wiki.linux.duke.edu/YumFaq

因为yum调用的是python,运行 Python，试下是否可行

代码如下:

[root@localhost~]# python
 Python 2.4.3 (#1, Nov 11 2010, 13:30:19)  
 [GCC 4.1.2 20080704 Red Hat 4.1.2-48)] on linux2
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import yum
 Traceback (most recent call last):
   File "", line 1, in ?
   File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 54, in ?
     import transactioninfo
   File "/usr/lib/python2.4/site-packages/yum/transactioninfo.py", line 31, in ?
     from sqlitesack import YumAvailablePackageSqlite
   File "/usr/lib/python2.4/site-packages/yum/sqlitesack.py", line 26, in ?
     import yumRepo
   File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 32, in ?
     import sqlitecachec
   File "/usr/lib64/python2.4/site-packages/sqlitecachec.py", line 19, in ?
     import _sqlitecache
 ImportError: libxml2.so.2: cannot open shared object file: No such file or directory
 >>>  

提示缺少libxml2.so.2，安装一下试试

代码如下:

rpm -ivh http://mirrors.163.com/centos/5/os/x86_64/CentOS/libxml2-2.6.26-2.1.2.8.x86_64.rpm[/code]
再次测试运行下yum命令，结果正常了，大喜
[code]
[root@localhost ~]# yum
 Loaded plugins: fastestmirror
 You need to give some 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 from your system
 groupinfo      Display details about a package group
 groupinstall   Install the packages in a group on your system
 grouplist      List available package groups
 groupremove    Remove the packages in a group from your system
 help           Display a helpful usage message
 info           Display details about a package or group of packages
 install        Install a package or packages on your system
 list           List a package or groups of packages
 localinstall   Install a local RPM
 makecache      Generate the metadata cache
 provides       Find what package provides the given value
 reinstall      reinstall a package
 repolist       Display the configured software repositories
 resolvedep     Determine which package provides the given dependency
 search         Search package details for the given string
 shell          Run an interactive yum shell
 update         Update a package or packages on your system
 upgrade        Update packages taking obsoletes into account
 
 
 options:
   -h, --help            show this help message and exit
   -t, --tolerant        be tolerant of errors
   -C                    run entirely from cache, don't update cache
   -c  [config file]     config file location
   -R  [minutes]         maximum command wait time
   -d  [debug level]     debugging output level
   --showduplicates      show duplicates, in repos, in list/search commands
   -e  [error level]     error output level
   -q, --quiet           quiet operation
   -v, --verbose         verbose operation
   -y                    answer yes for all questions
   --version             show Yum version and exit
   --installroot=[path]  set install root
   --enablerepo=[repo]   enable one or more repositories (wildcards allowed)
   --disablerepo=[repo]  disable one or more repositories (wildcards allowed)
   -x [package], --exclude=[package]
                         exclude package(s) by name or glob
   --disableexcludes=[repo]
                         disable exclude from main, for a repo or for
                         everything
   --obsoletes           enable obsoletes processing during updates
   --noplugins           disable Yum plugins
   --nogpgcheck          disable gpg signature checking
   --disableplugin=[plugin]
                         disable plugins by name
   --enableplugin=[plugin]
                         enable plugins by name
   --skip-broken         skip packages with depsolving problems
   --color=COLOR         control whether color is used
 
   Plugin Options:

最后，赶紧更新一下系统吧

代码如下:

yum update

好了 这样yum问题就完全解决了！

“Linux中yum管理工具被误删的问题怎么解决”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联网站，小编将为大家输出更多高质量的实用文章！

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