If you type history, you'll see a numbered list
flash by, showing you the previous 500 commands you've used.
You probably don't need to see all of the last 500 commands, so the
command history 20 might be useful. This way,
only the previous 20 commands you'd typed will display (you
can use any number with this command).
Here are other command history shortcuts which may be useful to you:
"Bang, bang": Typing !! (called "bang bang")
executes the last command in the history.
"Bang number": Typing
!number (as in
!302) will execute the command which is
numbered 302 in the history file.
"Bang string": Typing
!string (as in
!rpm) will execute a command with the most recent
matching string from the history file.
[Up arrow] and[ down arrow]: At
the shell prompt, you can simply press the up
arrow to move back through previous commands in your
history list (the down arrow will move you
forward through the commands) until you find the command you
want. Press [Enter] to execute the command, just
as if you had typed it on the command line.
