use vim

For unix-like systems vim comes installed by default

If you have a graphical operating system, vim is not very useful, you can use a graphical text editor, such as sublime.

vim is a terminal text editor.

In my case I don’t have a friendly graphical interface, I use Ubuntu server, there is only the command line.

That’s why vim is very useful to me.

Open a file with vim

vi file.txt

then the file opens and you can’t insert text.

To insert text you must be in text insertion mode:

This is done by touching the key

i

After adding text to the file you must save it.

That is done by touching

escape

and then below you write

:w

and

Enter

to exit a file

:q

and

enter

both things

:wq

and

enter