On a jailbroken iPhone, how can I run commands as root?

问题

I want to login as a root using system call in Xcode. I try this code without success:

System("su");
System("alpine");

or

System("su root");
System("alpine");

or

System("su root alpine");

When I google it I came to know that this is done using NSTask or NSPipe. Can anybody tell me how it possible to run multiple system commands using NSTask and NSPipe?

Please give me some hints about this or another method to do this. I am using this application on jailbroken iPhone.

Some more details are here.

回答1:

If you want to launch something as root you may use sudo.

Example of it's usage in one line with the password:

echo <password> | sudo -S <command>

来源：https://stackoverflow.com/questions/8516370/on-a-jailbroken-iphone-how-can-i-run-commands-as-root