$ yum install [packagename].x86_64
This way you will specify the architecture to use. If you do not specify the architecture you might end up installing both the x86_64 and the i386 packages with all it's dependencies.
If you have already done so in error, you can easily query for these packages using the following command:
$ rpm -qa --qf '%{name}.%{ARCH}\n' |grep i386
this command returns all i386 packages. You can pipe it directly into rpm -e or choose to uninstall them by hand.
2 comments:
you can also set this to default behavior in yum by adding this to /etc/yum.conf:
multilib_policy=best
Then if you want to install ix86 packages, you have to define the arch, but for x86_64 you don't have to.
Every install of CentOS comes with openssl.i686 which causes a lot of i386 packages to be installed by default :-s.
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