This is a cheat list of the most used operational and troubleshooting Ciena Commands used in SAOS OS cli. We are covering Ciena 3900 series (3902, 3916, 3920, 3930, 3940, 3960, etc.), Ciena 4200 series, Ciena 6500 and Ciena 8700 series. 

Ciena Operational Commands
CommandFuncionality
mac show It shows the mac table in your PC 
port show It shows generic physical parameters of the Ciena ports
port show port 3 It shows specific physical parameters of port 3
port show status It shows generic physical parameters of the Ciena ports, including description
port show statistics It shows statistics for each port
port xcvr show serial It shows the vendor name & part number & serial number of the optics inserted in the device
port xcvr show supported It shows the supportes tranceivers
port xcvr show port 2 It shows power transmitted and received in port 2
user show It shows the user account table 
arp show  It shows the ARP table
arp show interface <instance> It shows the ARP table for a specific instance
chassis show It shows chassis generic capabilities 
chassis power show It shows power supply modules status
chassis device-id show  It shows chassis IDs, serial number, etc.
chassis fan-tray show It shows fans status and speeds
chassis dying-gasp show It shows dying-gasp status
chassis show mac-address It shows chassis mac-addresses
icl show It shows Inter Chassis Link table
configuration show It shows full config
configuration show brief It shows any config appart from the default config
configuration show mgr <Process> It shows the specific bits of configuration related to a certain item
  configuration show differences-from-saved It shows the differences between the current config and the saved config
ntp show It shows NTP client a nd server status 
alarm show It shows active alarms table 
alarm show history It shows alarm history 
cli show full It shows the whole set of commands 
software show It shows the a summary of the software package
software license show It show the licenses intalled in the device
system show time  It shows time and date
system show date It shows date
system show uptime It shows the system uptime
command-log show It shows the commadns typed in the CLI
ndp show It shows IPv6 neighbors
lldp show neighbors It shows LLDP neighbors
dhcp client show It shows DHCP client status and DHCP Options State
user show It shows the user account table
usb-flash show It shows if a USB is connected or not
dot1x show It shows dot1x global status plus dot1x port state