Intro to Shell Scripting (with Bash)

working reference:  The Advanced Bash Scripting Guide
http://www.tldp.org/LDP/abs/html/

a series of commands in a file
invoking a script
sha-bang (#!) [man magic]

conditionals (if, case)
man [  (info coreutils test)
redirection

variables:
	declare/typeset
	quoting ("" vs. '' and $* vs $@)
	bracketing
	manipulating strings (?)

loops:
	for i in ...
	for ((a=1; a <= LIMIT ; a++))
	for ((a=1, b=1; a <= LIMIT ; a++, b++))

	while [condition]
	until [condition-is-true]

	break
	continue