Command History
The show history command from the user or privileged prompt will show you the last 10 previously typed commands.
The terminal history size # command can set the history buffer anywhere from 0 to 256.
# is any number between 0 and 256. The default is 10.
Use the up arrow or press Ctrl+P to retrieve previous commands instead of retyping them.
Use the down arrow or Ctrl+N to retrieve recent commands instead of retyping them.
Press the Tab key to complete the command after typing enough unique characters.