Well I see 2 issues:
1. As pointed out you do not have standard location for commands (/bin and /usr/bin) in your PATH. This would mean you will need to use the full path to any command to use it
2. $PATH is listed as being part of your PATH. This is very odd as it should be expanded prior to being displayed
So you can start investigating, on the command line enter the following:
Code:
PATH=$PATH:/bin:/usr/bin
This should now give you access to use all normal commands until you login again.
To find where the problem lies I would investigate .login, .profile, .bashrc, .bach_profile both within your user directory and the /etc directory to see what PATH is being set to and where the
issue is occurring.