A while back, I wrote a quick Bash guide called "Adventures in Data Science with Bash" (https://gumroad.com/l/datascience https://gumroad.com/l/datascience). I

A while back, I wrote a quick Bash guide called "Adventures in Data Science with Bash" (https://gumroad.com/l/datascience https://gumroad.com/l/datascience). It covers basic Bash commands (head, less, grep, cut, sort, uniq, curl, awk, join), but also pipes, for loops, variables, arrays, and command substitution.