Significance of colors in a terminal window?
 

:newbie: Hi - i've been wondering for some time what this means:

If i open a terminal window (im using mandrake) and seach through system files at the command prompt - i typically see listings in different colors. I think i have worked out that dark blue signifies a directory - but then there are other colors that i cant figure out what they mean. Im looking in /usr/bin and see some text highlighted in bright red - then there are text highlighted in brown or green with a @ symbol at the end.

I cant see explanantions for these colors anywhere - in particular im worried about the bright red flashing text which is probably trying to warn me of something? Can someone tell me what these colors mean please?

colors are determined by your enviroment variables
"man dircolors" tells you all you need to know