Adding Extra command line commands
 

I am working with embedded mini linux( Enigma 2 for dreambox multimedia).

Because of memory, it has a limited subset of commands.
How can I add additional linux commands. I ask this in general terms and I hope a "general" answer.

I want to avoid a common response Starting with IT DEPENDS !!!!!

Thank you for your understanding

Install packages related to commands.

What commands have you got now, and what commands would you like to add?