centos_Error: Protected multilib versions_解决方法

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　　centos_Error: Protected multilib versions_解决方法
　　
　　yum install libc.so.6
　　Loaded plugins: fastestmirror, refresh-packagekit
　　Repository base is listed more than once in the configuration
　　Repository updates is listed more than once in the configuration
　　Repository extras is listed more than once in the configuration
　　Repository centosplus is listed more than once in the configuration
　　Repository contrib is listed more than once in the configuration
　　Loading mirror speeds from cached hostfile
　　* base: ftp.stust.edu.tw
　　* epel: mirrors.yun-idc.com
　　* extras: mirror01.idc.hinet.net
　　* rpmforge: ftp.riken.jp
　　* updates: ftp.tc.edu.tw
　　Setting up Install Process
　　Resolving Dependencies
　　There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them.
　　--> Running transaction check
　　---> Package glibc.i686 0:2.12-1.107.el6_4.2 will be installed
　　--> Processing Dependency: libfreebl3.so(NSSRAWHASH_3.12.3) for package: glibc-2.12-1.107.el6_4.2.i686
　　--> Processing Dependency: libfreebl3.so for package: glibc-2.12-1.107.el6_4.2.i686
　　--> Running transaction check
　　---> Package nss-softokn-freebl.i686 0:3.14.3-3.el6_4 will be installed
　　--> Finished Dependency Resolution
　　Error:  Multilib version problems found. This often means that the root
　　cause is something else and multilib version checking is just
　　pointing out that there is a problem. Eg.:
　　
　　1. You have an upgrade for glibc which is missing some
　　dependency that another package requires. Yum is trying to
　　solve this by installing an older version of glibc of the
　　different architecture. If you exclude the bad architecture
　　yum will tell you what the root cause is (which package
　　requires what). You can try redoing the upgrade with
　　            --exclude glibc.otherarch ... this should give you an error
　　message showing the root cause of the problem.
　　
　　2. You have multiple architectures of glibc installed, but
　　yum can only see an upgrade for one of those arcitectures.
　　If you don't want/need both architectures anymore then you
　　            can remove the one with the missing update and everything
　　will work.
　　
　　3. You have duplicate versions of glibc installed already.
　　You can use "yum check" to get yum show these errors.
　　
　　...you can also use --setopt=protected_multilib=false to remove
　　       this checking, however this is almost never the correct thing to
　　       do as something else is very likely to go wrong (often causing
　　       much more problems).
　　
　　Protected multilib versions: glibc-2.12-1.107.el6_4.2.i686 != glibc-2.12-1.47.el6.x86_64
　　Error: Protected multilib versions: nss-softokn-freebl-3.14.3-3.el6_4.i686 != nss-softokn-freebl-3.12.9-11.el6.x86_64
　　You could try using --skip-broken to work around the problem
　　** Found 111 pre-existing rpmdb problem(s), 'yum check' output follows:
　　SDL-1.2.14-3.el6.x86_64 is a duplicate with SDL-1.2.14-2.el6.x86_64
　　atlas-3.8.4-2.el6.x86_64 is a duplicate with atlas-3.8.4-1.el6.x86_64
　　audit-libs-2.2-2.el6.x86_64 is a duplicate with audit-libs-2.1.3-3.el6.x86_64
　　augeas-libs-0.9.0-4.el6.x86_64 is a duplicate with augeas-libs-0.9.0-1.el6.x86_64
　　bash-4.1.2-15.el6_4.x86_64 is a duplicate with bash-4.1.2-8.el6.centos.x86_64
　　boost-date-time-1.41.0-17.el6_4.x86_64 is a duplicate with boost-date-time-1.41.0-11.el6_1.2.x86_64
　　
　　错误的解决方法（很多就在提示里面）：
　　#1 手动处理重复
　　这个是要死人的
　　#2 删除重复的
　　这个有时候会导致已经编译和安装的软件出问题，所以还是要有心理准备
　　#3 自动删除重复命令
　　package-cleanup --cleandupes
　　 这个也会导致#2 的问题
　　#4 在yum命令后面加入忽略参数：--setopt=protected_multilib=false
　　you can also use --setopt=protected_multilib=false to remove
　　       this checking, however this is almost never the correct thing to
　　       do as something else is very likely to go wrong (often causing
　　       much more problems).
　　这里说了，很可能导致more probems。不过么，现实中，可以试试看，尤其是保持一个老系统照旧运行时，这个方法会起作用的。
　　
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