Files and File contents

Create

To create a file, we can use the touch command.

or we can output commands to a file with echo and/or >.

Edit

To edit the files, using the command line, we can use Vi, Vim, or Nano. I prefer nano. This will be basic as both editors have a lot of to them.

Nano

Nano has some key commands for editing like cut, copy, paste, search, replace, etc. Here is a quick guide.

nano Hello

Then to save the file we can to ctrl+o, but when exiting nano, we use ctrl+x. If we exit without saving, it will ask us if we want to save the file, then ask if we want to change the file name or leave it as is. ctrl+x > y > enter is the quick way to save and exit the editor.

Vi/Vim

vi Hello / vim Hello

Vi and vim are similar but vim is almost a proper superset of vi. Meaning everything that is in vi is available in vim. Here is a VIM cheat sheet.

To being editing file in Vi/Vim, you need to press the i key to go into "insert" mode.

The "mode" you are in will be displayed at the bottom left. To exit a mode, press ESC.

to save a file, type :w and press enter, to quit a file type :q and press enter, to both save and quit a file, type :wq and press enter.

View

cat Hello