Difference between revisions of "Shell/Recall Previous Commands"

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== Recall Previous Commands ==
Sometimes it's expedient to quickly recall a previous command without the need to retype it. The most common means of doing this is to use the up arrow.  Let's try it:
Sometimes it's expedient to quickly recall a previous command without the need to re-type it. The most common means of accomplishing this is to use the up-arrow.  Let's try it:
{{ConsoleLine|john-williams@codermerlin:~$ |ls}}
{{ConsoleLine|john-williams@codermerlin:~$ |ls}}


Now, let's repeat the command, but rather than type '''ls''' again, try typing the up-arrow:
Now, let's repeat the command, but rather than typing in '''ls''' again, try pressing the up arrow key:
{{ConsoleLine|john-williams@codermerlin:~$ |{{Key|↑}}}}
{{ConsoleLine|john-williams@codermerlin:~$ |{{Key|↑}}}}



Latest revision as of 13:22, 22 February 2023

Within these castle walls be forged Mavens of Computer Science ...
— Merlin, The Coder

Sometimes it's expedient to quickly recall a previous command without the need to retype it. The most common means of doing this is to use the up arrow. Let's try it:

john-williams@codermerlin:~$  ls

Now, let's repeat the command, but rather than typing in ls again, try pressing the up arrow key:

john-williams@codermerlin:~$  

Try pressing the and several times.

ObserveObserveIcon.png
Observe, Ponder, and Journal: : Section 5
  1. What happens each time you press the ?
  2. What happens each time you press the ?