linux 中yum使用提示人如下信息

Loading "installonlyn" plugin
Setting up Install Process
Parsing package install arguments
fedora 100% |=========================| 2.1 kB 00:00
updates 100% |=========================| 2.3 kB 00:00
Nothing to do

]# yum update
载入插件: fastestmirror, refresh-packagekit
Loading mirror speeds from cached hostfile
* rpmfusion-nonfree-updates: astromirror.uchicago.edu
* fedora: mirror1.ku.ac.th
* rpmfusion-free-updates: astromirror.uchicago.edu
* rpmfusion-free: astromirror.uchicago.edu
* updates: ftp.jaist.ac.jp
* rpmfusion-nonfree: astromirror.uchicago.edu
google | 951 B 00:00
google64 | 951 B 00:00
rpmfusion-nonfree-updates | 2.8 kB 00:00
fedora | 2.8 kB 00:00
rpmfusion-free-updates | 2.8 kB 00:00
rpmfusion-free | 2.7 kB 00:00
adobe-linux-i386 | 951 B 00:00