I highly recommend re-reading the entire formal standard for technologies you work with routinely, on a roughly annual basis. It's a triple whammy of refresher, update, and niche discovery.
I attribute this advice to Æleen Frisch; albeit without pulling my very dog-eared copy from the stacks, I recall that words to similar effect can be found in the epochal Essential System Administration (2002), possibly in the form of reading every manpage in your local Unix base system.
I attribute this advice to Æleen Frisch; albeit without pulling my very dog-eared copy from the stacks, I recall that words to similar effect can be found in the epochal Essential System Administration (2002), possibly in the form of reading every manpage in your local Unix base system.