Shell prompt

["Arnaldo Bento" <arnaldo_bento@xxxxxxx>]

Hello All

In the past I had the prompt of the terminal window as this:  
  
[root@something tmp] #  
  
Now and without I know reason the prompt changed for  
  
bash-2.05b #  
Even if I change from directory the prompt still the same.  
  
What to do for to have back the "old" prompt?  [root@something tmp] #  
Thank you for the help.

 
Arnaldo Bento