Chapter 10. Maintenance

In the long run every program becomes rococo, and then rubble.

Alan Perlis

"Epigrams in Programming"
ACM SIGPLAN, September 1982

This chapter describes how to maintain a development environment and what causes development environments to change. Maintenance of software products is then discussed, along with some typical maintenance tasks and how maintaining a product is affected by each part of a development environment. The final section examines planned removal of things such as files and SCM tags that have been generated while creating products.