Error after trying to upgrade installed

[Ryan Schmidt]

On Jan 18, 2009, at 20:53, Doctor Who wrote:

> Also, does removing coreutils cause a problems with paths for tools
> like 'ls' now?  How do I fix the paths so I can use the tools again?
>
> tbook:~ who$ ls
> -bash: /opt/local/bin/ls: No such file or directory

Since /opt/local/bin/ls doesn't exist, the shell should now look for  
ls in other paths, and find it in /bin.

You must have it set up differently.... What does "which ls" say?  
What does "alias | grep ls" say?