A week of stress produced this doozy while attempting to upgrade from go 1.2 to go 1.3<p>[peter@bamboo-sb bin]$ sudo mv &#x2F;bin&#x2F; &#x2F;usr&#x2F;local&#x2F;bin&#x2F;go1.3    
[peter@bamboo-sb bin]$ sudo mv &#x2F;tmp&#x2F;go&#x2F;bin&#x2F; &#x2F;usr&#x2F;local&#x2F;bin&#x2F;go1.3
sudo: mv: command not found
[peter@bamboo-sb bin]$ mv
-bash: mv: command not found
[peter@bamboo-sb bin]$ ls
-bash: &#x2F;bin&#x2F;ls: No such file or directory
[peter@bamboo-sb bin]$ ls
-bash: &#x2F;bin&#x2F;ls: No such file or directory
[peter@bamboo-sb bin]$ ls
-bash: &#x2F;bin&#x2F;ls: No such file or directory<p>All during a skype call. It is very recoverable, but I felt quite foolish.