Question about rpm i386 and i686

[dss]

In http://download.fedora.redhat.com/pu...pdates/2/i386/ I saw three 686 rpms:

1. glibc-2.3.3-27.1.i686.rpm
2. kernel-2.6.8-1.521.i686.rpm
3. kernel-smp-2.6.8-1.521.i686.rpm
4. nptl-devel-2.3.3-27.1.i686.rpm

When I start "rpm -qa|grep kernel", for example, I see:
[root@localhost root]# rpm -qa|grep kernel
kernel-2.6.5-1.358
kernel-utils-2.4-9.1.131
kernel-source-2.6.5-1.358
kernel-2.6.8-1.521

How do I know, is i686.rpm installed or not?
My processor - P-IV

[zAo]

Try $ uname -a

Otherwise $ uname -m