ubuntu command non-recognition

[Graham Cunnington]

hello
i have just installed Ubuntu Edgy and i find that it is unable to install 
proprietary free software specifically made for Linux -  Adobe Flash Player and 
RealPlayer -  that is a bug in the  Installer, and it means that i cannot watch 
my MySpace Videos, Yahoo and Google Videos and the BBC news, the latter being 
my daily habit (until ubuntu came along).

to try to install myself myself then, i downloaded flashplayer 9 and put it in 
my home directory, and then in a terminal i used the following command to 
change directory: cd /home/graham/flashplayer/
where i had placed flashplayer 9; then i gave the command:

sudo install /home/graham/flashplayer/flash-plugin-9.0.124.0-release.i386.rpm

(1) this sudo install command does not work.

i was directed to install help but i could not understand a word of what was 
written there:it did not show the command line to give to install a program

(2) the install help does not help, and needs to be rewritten clearly, so that 
it will aid a user

so i tried the following, which is a standard Linux command line, and worked 
for me on Mandriva:

rpm -Uvh /home/graham/flashplayer/flash-plugin-9.0.124.0-release.i386.rpm

(3) Ubuntu did not recognise the command "rpm"

i am disappointed in the quality of this O/S which i had heard so much about.

can you tell me  what specific commands to use to install rpm files in Ubuntu, 
please? This lack of direction is spoiling my user experience, as i cannot 
install programs made for Linux.

thank you.

graham cee


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