What is the difference between su and su -
 

I'm often in a terminal and need to be in super user mode. I used to just enter "su" but now I use "su -". I figure I can't lose by having too much but I just don't know. Are there times when you shouldn't use "su -"?

Thanks,

royeo

nice question, even I wanted to know the diff.
here is what I found
http://www.linuxquestions.org/questi...d.php?t=303999

su - turns you into root while su just gives you the privileges.