# yum clean all
Loading "installonlyn" plugin
Loading "fastestmirror" plugin
Loading "priorities" plugin
Cleaning up Everything
Cleaning up list of fastest mirrors
[root@localhost ~]# yum update
Loading "installonlyn" plugin
Loading "fastestmirror" plugin
Loading "priorities" plugin
Setting up Update Process
Setting up repositories
base                      100% |=========================| 1.1 kB    00:00     
updates                   100% |=========================|  951 B    00:00     
addons                    100% |=========================|  951 B    00:00     
extras                    100% |=========================| 1.1 kB    00:00     
Determining fastest mirrors
Reading repository metadata in from local files
primary.xml.gz            100% |=========================| 798 kB    00:00     
base      : ################################################## 2334/2334
Added 2334 new packages, deleted 0 old in 7.91 seconds
primary.xml.gz            100% |=========================| 105 kB    00:00     
updates   : ################################################## 261/261
Added 261 new packages, deleted 0 old in 1.11 seconds
primary.xml.gz            100% |=========================|  157 B    00:00     
Added 0 new packages, deleted 0 old in 0.00 seconds
primary.xml.gz            100% |=========================| 6.9 kB    00:00     
extras    : ################################################## 42/42
Added 42 new packages, deleted 0 old in 0.09 seconds
0 packages excluded due to repository priority protections
No Packages marked for Update/Obsoletion
[root@localhost ~]# yum install djskdjskdsk
Loading "installonlyn" plugin
Loading "fastestmirror" plugin
Loading "priorities" plugin
Setting up Install Process
Setting up repositories
Loading mirror speeds from cached hostfile
Reading repository metadata in from local files
0 packages excluded due to repository priority protections
Parsing package install arguments
Nothing to do
[root@localhost ~]#