I learned Unix almost 30 years ago, while attending graduate school in the early 90s, from a now long-obsolete book entitled “Unix for the Impatient”.
Some of the tools and commands I learned back then have long since
become irrelevant (
biff — remember
Others, although long in the tooth, continue to serve me well every day
cc). And yet a third group seems to be more important
than ever (such as
tar, which is the basis for Docker images).