ติดตั้งโปรแกรม freeradius ด้วยคำสั่ง
yum install freeradius

แล้วมันฟ้องว่า

[root@linuxsis admin]# yum install freeradius
Loading "installonlyn" plugin
No Repositories Available to Set Up
Setting up Install Process
Parsing package install arguments
Traceback (most recent call last):
  File "/usr/bin/yum", line 29, in <module>
    yummain.main(sys.argv[1:])
  File "/usr/share/yum-cli/yummain.py", line 94, in main
    result, resultmsgs = base.doCommands()
  File "/usr/share/yum-cli/cli.py", line 264, in doCommands
    return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds)
  File "/usr/share/yum-cli/yumcommands.py", line 134, in doCommand
    return base.installPkgs(extcmds)
  File "/usr/share/yum-cli/cli.py", line 435, in installPkgs
    self.pkgSack.matchPackageNames(arglist)
  File "/usr/lib/python2.5/site-packages/yum/packageSack.py", line 360, in matchPackageNames
    unmatched = list(unmatched)
TypeError: 'NoneType' object is not iterable
[root@linuxsis admin]#

ต้องไปแก้ ไง ครับ ขอบคุณครับ