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http:\\ciscocertifications.info
terminal history <size number-of-command lines>
To configure the number of command lines the system records by default, enter the following command
line in configuration mode:
history <size number-of-command lines>*Keypoints:To display the contents of the history buffer, you would use the "show history" command.Editing Commands
Ctrl-W - Erases a word
Ctrl-U Erases a line
Ctrl-A Moves the cursor to the beginning of the current line
Ctrl-E Moves the cursor to the end of the current line
Ctrl-F (or right arrow) Move forward one character
Ctrl-B (or left arrow) Move back one character
Ctrl-P (or up arrow) Recall commands in the history buffer starting with the most recent com-
mand.
Ctrl-N (or down arrow) Return to more recent commands in the history buffer after recalling
commands with Ctrl-P or the up arrow key.
ESC+B Move backward one word
ESC+F Move forward one word
Ctrl-Z Ends Configuration Mode and returns to the Privileged EXEC Mode.
TAB Key Finishes a partial command
*Keypoints:Know the above listed editing keystrokes and what they do. Especially the common ones like Ctrl+Zand Ctrl+A.Know that the "show hosts" command will display IP addresses assigned to all the hosts on yournetwork.Know what the TAB key does.Router ElementsRAM
This is the working area for the Router. It contains Routing Tables, ARP Cache, packet buffers, IOS,
etc. It also holds the Routers Running-Config file. The contents of RAM are lost when you power
down.
Show Version
To view info about IOS in RAM. This includes system hardware configuration, software version, and
the names and sources of configuration files and boot images.
Show Processes
To view info about programs in RAM
Show Running-Configuration
To view the active configuration file
Show Memory / Show Stacks / Show Buffers
To view tables and buffers