Here is a quick cheat sheet of commands that I use during the initial setup of an Extreme switch.
Showing Configuration:
show config
show config detail
NTP, Clock and Time
You can see clock and time by either the show system or show switch commands
configure timezone name EST -360 autodst name EDT
enable ntp
configure ntp server add 192.168.1.200
configure time 1 19 2016 7 55 55
Show Switch time in use counters
show odometers
See which config is used:
show switch