Sample Commands:
rm -r dir/

Notes:
mv does not take -r

==

useful directories:
-archive
-quickstart
-backupsonthefly

==

if you have been working with dev.opera

[first copy current opera to archive]

cp -r opera/ archive/[date].opera/

[then delete]

rm -r opera/

[then move dev.opera to opera] -- maybe these two in one step?

mv dev.opera/ opera/

[make sure dev is no longer around]

==

in theory, with acme setup

[first, make sure Z.dev.freegigmusic.com/ does not exist & dev.freegigmusic.com does exist]

mv dev.freegigmusic.com/ Z.dev.freegigmusic.com && cp -r freegigmusic.com/ dev.freegigmusic.com/

[do yr thang on dev, and when u r finished]

mv freegigmusic.com/ archive/2020.20.20.freegigmusic.com/ && cp -r dev.freegigmusic.com/ freegigmusic.com/

[remove dev!, -rf? then]
mv Z.dev.freegigmusic.com/ dev.freegigmusic.com/
==