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A text editor is an application

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that enables you to view, create, or modify

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the contents of text files.

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Text editors were originally created to write programs

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in source code, but are now used to edit a wide variety

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of text based files.

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Previously, in examples we used Vim mostly,

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sometimes Nano, G edit is another option

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but we're going to go into depth

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about all the different commands that you can use

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while performing tasks with these editors.

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So the first one I'm going to check out is the Vim.

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Now, if you don't have a file named this already

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it's going to automatically create it for you.

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Now, when you first enter into the Vim

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you're going to be in command mode.

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Now there's two modes, execute mode and insert mode.

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To get to insert mode, you simply press the I key.

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Press escape to get out of there.

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And to get into the execute mode,

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you're going to hit the colon.

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And this allows you to do multiple commands,

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like right, quit and different save functions.

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So, first thing we need to do is insert.

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We want to create a software listing for this example.

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We're going to simply use this as any other editor.

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Your going to put in a few names of some softwares.

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Okay.

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Now, to escape out of the insert mode where

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you're going to simply use the escape key.

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And again, we're going to go to the execute mode,

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so there's going to be a colon.

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We're going to do, right

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which saves the file and quit out of the application.

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Okay.

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Now, if we want to view this, we can simply go to cat

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and we're going to make sure we use this tab command

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make sure were using that as much as possible to save time.

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All right, and we can see that we have the

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text successfully saved there.

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Next we're going to do is work on editing and actual text.

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So I created a software listing earlier,

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and so we're going to copy this.

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So the dash A just means recursively, make sure we

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using our tab as much as possible.

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So we're going to copy it.

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That's the source.

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The designation is going to be our home directory.

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All right.

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So we're going to list it out.

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We're going to see that there, we're going to see the new

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information that was input there.

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Now, if you look at this text, we see there's a few errors

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here with the spelling.

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This is going to be a good time to use the keys

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and the shortcuts in the Vim editor to just to

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see how they operate.

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So we're going to open it up.

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Just going to simply use the X key.

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So I'm going to remove this I from here,

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and I'm going to put it after the F.

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And we're use the P, which is paste.

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Need to say that again.

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Put it back here.

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So cut,

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paste,

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cut,

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paste.

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So it's always going to put it

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after the letter that's selected with the cursor.

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Next thing we're going to do is actually use example to search

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for other texts.

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So we're going to look for that mistake again and here.

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We'll see it highlights it for us.

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Also to use this search function,

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we're just going to use the forward slash for this.

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And now we're going to use the K key to go up

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and the J go down.

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Just other keys that we can use.

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Just testing those out.

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We're going to do the same thing.

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I'm going to cut this.

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I'm going to paste it here

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to make a quick correction.

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And since you have the

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versions already in the separate column, we can delete this.

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Let's delete key.

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So you don't have to be in insert mode again

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to actually delete and cut and paste different things.

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So that's a good function of this.

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So we can go through here

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do a few more edits, delete the red hat.

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Now, if you want to go to the beginning of a line

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you could use the shift six, the carrot symbol

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and to quickly delete a line

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we can easily just do the double D.

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So just say, we already have the window server

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somewhere else or no longer need it.

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Double D and see that's gone.

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So let's get out of here

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again, right quit.

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Make sure those changes saved.

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Simple as that.

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Next thing we're going to do is edit the file.

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But this time we're going to use the Nano.

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Now, if you can see here, most of the commands are used

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with the control key, just to know it shows 'em

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all capitalized, but you're going to use the lower case version

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of these letters.

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Again, we're just going to go through and do a few things.

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You can go through here, again, delete as needed.

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The regular delete key.

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Let's see, we have Firefox here twice.

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So we just do is control K.

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That's another way we can delete entire line.

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And with Nano we go immediately into insert mode

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so we can start typing.

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We're do apache here, tomcat,

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give it some type of version.

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Okay.

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And now in Nano, control O that's what's going to

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save the file.

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We going to put enter here.

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And to exit out we'll simply do control X.

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Just like last time, make sure these changes were saved.

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So again, a text editor is very basic

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so we just went through a few of the shortcuts

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of how to quickly navigate through these text files

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and make quick changes by deleting entire lines

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cutting and pasting and things of that nature.

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Now I'll see you in the next lesson.