Information Tech

There are some commands that are officially no longer supported by Cisco, but that still work on most devices. A few of these commands are shorter than their modern-day replacements, so using them can speed up your configuration. Some commonly used ones include:

Old Command

wr (write memory)

wr er (write erase)

who

whe (where)

New Command

copy run start (copy running-config startup-config)

erase start

show users

show sessions

Source: Global Knowledge Training