Available commands in Cisco IOS

It is possible to browse on available commands in a cisco catalyst or router.
Just type the comand:
show parser dump all

show parser dump all | grep tranceiver

15 debug transceiver detail
15 debug transceiver info
15 debug transceiver error
1 show interfaces transceiver detail module Number
1 show interfaces transceiver detail
1 show interfaces transceiver threshold violations module Number
1 show interfaces transceiver threshold violations
1 show interfaces transceiver calibration module Number
1 show interfaces transceiver calibration
1 show interfaces transceiver properties module Number
1 show interfaces transceiver properties
1 show interfaces transceiver module Number
1 show interfaces transceiver
1 show interfaces transceiver detail module Number
1 show interfaces transceiver detail
1 show interfaces transceiver threshold violations module Number
1 show interfaces transceiver threshold violations
1 show interfaces transceiver calibration module Number
1 show interfaces transceiver calibration
1 show interfaces transceiver properties module Number