Change directly where the file is located
Cd
Then sudo tar xf ubuntu-11.04-r1-minimal-armel.tar.xz
You may need to
Apt-get install bzr
Apt-get install xz-utils
Change directly where the file is located
Cd
Then sudo tar xf ubuntu-11.04-r1-minimal-armel.tar.xz
You may need to
Apt-get install bzr
Apt-get install xz-utils