===== Editors =====

==== General ====


  * Many different editors
    * Unique (dis-)advantages
    * Different look and feel
  * Editors should provide us with
    - Simple text editing
    - Copy and paste
    - Search and replace
    - Saving changes
    - Wide availability

=== Two editors that satisfy our needs: ===


  * nano
  * vim

=== Common starting point ===

<code bash>
nano filename
</code>
<code bash>
vim filename
</code>


==== Nano ====

{{.:screenshot_nano.png}}

==== Nano explained ====

> This editor is focused on being easy to use, but still providing every feature a user might need.

=== Interface ===

> The interface consists of four parts, namely from top to bottom:


  * Title bar
  * Text area
  * Command line
  * Key bindings

=== Usage ===

> Nothing special, key-bindings visible while editing

^Feature       ^                 Usage                 ^
|Navigation    |              Arrow keys               |
|Actual editing|         Typing text, as usual         |
|Cut/Paste line|  ''%%<CTRL>%%''+k / ''%%<CTRL>%%''+u  |
|…             |    explained in key bindings field    |


=== Short ===

> Use this editor if you are new to the command line.\\
> It is straight forward, but can be extended on the way.

  * Auto-indentation
  * Syntax highlighting
  * Multi-buffer


{{.:screenshot_nano.png?0x300}}

==== Vi(m) ====

{{.:screenshot_vim.png}}

==== Vi(m) explained ====

> This editor is focused on productivity and efficiency, providing everything a user might need.

=== Interface ===

> The simple interface consists of two parts:


  * Text area
  * Command line

> Since this editor is very easy to extend, after setting up a few plug-ins, it will probably look quite different!


=== Usage ===

> This is a multi-mode editor, you’ll have to switch modes whenever you change what you want to do.

^Feature   ^                    Usage                    ^
|Navigation|                 Arrow keys                  |
|Writing   |  change to input mode, then write as usual  |
|Commands  |     exit current mode, press ''%%:%%''      |
|…         |           explained on next slide           |


=== Short ===

> Use this editor if you like a challenge.\\
> It is fast and very nice — but you’ll sometimes get hurt on the way.

<HTML>
<!-- - Auto-indentation, Syntax highlighting, Multi-buffer -- just like nano -->
</HTML>
  * File/Project Management
  * Use a plug-in manager


{{.:screenshot_vim.png?0x300}}

==== Vi(m) modes and keys ====

  * any mode:
    * back to the **default mode**: **''%%<ESC>%%''**
  * command mode (followed by ''%%<RETURN>%%''):
    * **save** current file: **''%%w [filename]%%''**
    * **quit** the editor
      * after saving: **''%%q%%''**
      * without confirmation: **''%%q!%%''**
    * **help**: **''%%h [topic]%%''**, e.g. **''%%h tutorial%%''**
    * **search and replace**: **''%%%s/old/new/gc%%''**
  * //default mode//:
    * enter **input mode**: **''%%i%%''**
    * enter **command mode**: **''%%:%%''** //(colon)//
    * **mark**
      * **character**-wise: **''%%v%%''**
      * **line**-wise: **''%%<SHIFT>-v%%''**
    * **delete**
      * **character**-wise: **''%%x%%''**
      * **line**-wise: **''%%dd%%''**
      * **marked content**: **''%%d%%''**
    * **search**: **''%%/abc%%''**


[[http://www.ks.uiuc.edu/Training/Tutorials/Reference/virefcard.pdf|VI Reference]]