Question

linux.

1. If you are running UBUNTU: There may be an issue with the arrow keys working properly in vi on Ubuntu. When you use the arrow keys in insert mode the letters A, B, C, and D get printed instead. There are a few fixes to this problem but the main culprit is the version of vi installed on your system. Ubuntu ships with vi-light. Let’s upgrade to the full vi.
   
   Use apt to install the vim package (vim is the real name of the vi program for installation purposes and stands for Vi IMproved). Paste the output or a screenshot of the output of the installation information below along with your command. Run vi and verify that vi now properly responds to the arrow keys in insert mode.

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Output of installation information:

If you are running LUBUNTU: Lubuntu already has Vi Improved (vim) installed. Let’s install a competitor to the vi editor called emacs. If you ever want to start an argument between a group of Unix users ask them if they prefer vi or emacs! Emacs tends to have a bigger system footprint than vi and is therefore not usually pre-installed.

Use apt to install the emacs package (a lot of items might get installed). Paste the output or a screenshot of some of the output of the installation information below along with your command. Run emacs to see how it differs from vi.

2.What command can you use to verify that the new software you installed in step 1 is now installed?

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Answer 1

Solution for Ubuntu

Before installing vim run the following command to make sure everything is up to date.

if it is not up to date run sudo apt upgrade .

To install vim run the command sudo apt-get install vim and press enter (you have enter your account password to begin the installation)
sudo this gives you the superuser permission.

Then run vim (verified that arrow keys do not input a,w,s,d)
To check whether software is installed or not run vim --version

***The problem you mentioned with the arrow keys is not present in the newer version of Ubuntu***