linux输入yum后提示： -bash: /usr/bin/yum: No such file or di

linux输入yum后提示： -bash: /usr/bin/yum: No such file or directory的解决方案

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

yum remove yum

然后就杯具了...

[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

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

关于rpm --nodeps的解释

--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

[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

[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 "<stdin>", 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

rpm -ivh http://mirrors.163.com/centos/5/os/x86_64/CentOS/libxml2-2.6.26-2.1.2.8.x86_64.rpm

再次测试运行下yum命令，结果正常了，大喜

[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: