Forum OpenACS Q&A: Response to What does "couldn't create pipe: too many open files" mean?

In the thread referenced Ola, S.Y. mentions a 4MB PDF entitled "Securing and Optimizing Linux: RedHat Edition" -- this is also available in HTML format at http://www.linuxdoc.org/LDP/solrhe/Securing-Optimizing-Linux-RH-Edition-v1.3.