What would you do if the chmod command on a system that you manage lost its execute permissions? Well, you wouldn’t exactly just chmod it back to its original state. So, what could you do?

References OS X Mountain Lion: All Applications and Utilities Computer Hope: Linux and Unix Chmod Command Bash Cookbook: Solutions And Examples for Bash Users; Carl Albing, et al.

Ever wonder why you need a ./ before a Unix shell script or command of your own in order to run it? Here's what the Linux dot slash does and why Unix systems require the ./ syntax.