Re: Psudo security
I generally use sudo su for a terminal when I am doing administrative maintenance or troubleshooting requiring several commands or activities during the session (which may be over days in some cases)
Once I am done I exit-exit to close the terminal and then open an new one if I am doing oddball stuff and use su if needed for individual commands that need escalation.
If I log back into a machine of mine and find a terminal open from a previous session I always exit-exit it and open a new one just to be safe, its a habit now since I've done it for so long.
Not sure if that is exactly best practice, but I haven't mucked up anything by being in the wrong terminal account since I started working that way.
If there are better ways or options I'm always open to hearing about them since I am mostly a self taught Linux guy.
PS - I always use Sudosu on the Reg.