[CentralOH] dayspan: a piano 'fingering exercise' in shell

[R P Herrold]

On Thu, 15 Jun 2017, Eric Floehr wrote:

> Can you provide some examples of use: input, output, etc. for various use
> cases?

certainly -- I added a usage example, with expected values 
for those doing TDD, and the samples of real world examples:
 	days_spanned.sh-invoked.txt
at:
	https://github.com/herrold/tool-tips/tree/master/convenience

which take, compress, and age away database, and html site 
backups, using find and friends.  There is also a Level zero 
backup weekly with this site, also aged away on a 'toss out 
the older ones, consistent to having one, _all the way back_ 
strategy' and so I can pick through that archive as well with 
decreasing granuarity of what to choose between

-- Russ herrold