The following is a primer for the Scheme family of programming languages. It was originally written to aid newcomers to technology being developed at The Spritely Institute but is designed to be general enough to be readable by anyone who is interested in Scheme.
Source: A Scheme Primer.
I've talked about DWIM before, where I bend Emacs to help me do what I mean. Emacs is also great for wrapping command-line one-liners with elisp, so I can quickly invoke commands without thinking too much about flags, arguments, etc.
I keep thinking the shell-command is ripe for plenty of enhancements using our DWIM fairydust.
Source: Emacs DWIM shell-command, an article by Álvaro Ramírez.
In this post, I will provide a little more information about locks, how they are used in PostgreSQL, and what things to look for to spot problems vs high usage.
Source: Postgres Locking: When is it Concerning?, an article by David Christensen.