How to enter command line mode?

[fangshichao]

(03-03-2017 07:14 PM)Tim Wessman Wrote:  If you are talking the calculator (HP Prime), then your information is wrong I think. The OS is not unix based and you don't have a command line like you seem to be asking for I think.

Then I must have got some wrong info about the os. I'm just thinking of running my own binary file on the calculator.
Thank you very much.