I have installed knoppix into HDD.
while i try to install realplayer,some error occur:
1:install *.rpm
<home /knoppix/soft/realplayer.rpm';echo RESULT=$,
rpm:To install rpm packages on debian systems ,use alien,See readme.debian
error :cannot open packages index using db3-can't find such file or directory
error:cannot open packages database in /var/lib/rpm
result=1

other softwares have the same problem:
2:intall tar.gz
installpkg//home/knoppix/soft/kylix3.tar.gz;echo result=$?
sh:installpkg:command not found
result=127

how to deal with it?please help me.thanks.