RPM command not found

Hi ,

I am evaluating a Digi im.x8m nano kit.
I read through the hardware design manual and came across power and performance report.


I went through the instructions to run some tests over the board and it seems i ended up with following error , when tried to install any rpm packages. Is this expected?

-sh: rpm: command not found

please take a look at this page for instructions on adding rpm to your image