Quick-and-dirty solutions often attend to a specific instance of a problem rather than fixing the cause of the more general problem. As such, they are sometimes used to keep an item of software or hardware working temporarily until a proper fix can be made.
The phrase is also frequently used in describing any document or tutorial that gives a brief overview about how to do something, without going into too much detail about why or how it works.
Microsoft's first operating system, MS-DOS, was originally called Quick and Dirty Operating System (QDOS), prior to its purchase from Seattle Computer Systems.