How to you sign in under administrator
I have been having a hard time finding out how to log on to the administrator account. I am a single user and would prefer not to make a second account being that administrator is already on the system.
I am installing software and it does not always ask for the administrator password. Then the installation has some kind of error becuase it did not have admin rights. I have seen references to using sudo, which I have never gotten to work. Also the instructions are for someone who is familiar with the system and commands and are not step by step. A lot of good that does. I am not above learning this way as well but, it has now become a bit of a challenge to log into the administrator account.
So, my main concern is how do I bypass the log on screen for me to get to the administrator log on. Second, then how do I use terminal to log on to administrator to install. Third, is there a good tutorial and manual on how to use ther terminal for installing programs and such?
MacBook Pro, Mac OS X (10.7.4)