[CentOS] yum provides on centos 5.2

Thu Aug 28 00:49:20 UTC 2008
Jerry Geis <geisj at pagestation.com>

I am trying things like "yum provides alsamixer" on centox 5.2 i386 and 
also "yum provides vi"
"yum provides gvimdiff"
"yum provides dumpiso"
"yum provides uname"

All of these return "no matches found"

is something broke???

These are just examples. I was trying to do "yum provides xf86Modes.h" 
it returns no matches also.