aha tady je to vysvetleny proc nejde dat rootovi heslo :)
"root in Linux (or any Unix-like system) is just the user with User ID 0. The su program (which actually stands for "Switch User", not "Super User") is just a program to start another program with a different user ID than the starting program (by default to uid 0, which is to user root). Android does not use the traditional /etc/passwd, however it still uses Linux User ID and Group ID for managing permissions. "
coz me tedy privadi k myslence ze android je neskutecne nebezpecny OS ne ? staci predem backdornuty proprietarni modul od vyrobce a "mas vsechno" bez moznosti na to nejak prijit.
mozna bude resenim ubuntu mobile pokud vznikne middleware na spousteni android aplikaci achjo :)