please quote errors exactly
i open root in command line not--- before that linux-16f:/home/lobajr1 but change to dhcppc14:/home/lobajr1...
copy and paste from the actual commandline session. Include all commands and outputs.
It looks like you are working in a networked environment. Either your action has led to you using a terminal on another computer, or accessing the network has renamed the computer you are using.