O_o
Well, I don't know why that's happening, don't know what change you've made, I could guess that you have messed with the bash profile or something, you try something like:
Code:
# export PATH=/bin:/usr/bin:/sbin:/usr/sbin
You could also check if it's a path problem using complete paths to binaries, like:
But as I said, I'm just guessing, I don't know what you did before the problem started so that's info you'll have to add here
Regards