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120 Chapter 3 Exploring Linux Filesystems If it is no trouble, could you kindly let me know such that I need not wait until next year when I visit your lodge? Regards, Mackenzie Elizabeth -UUU:----F1 project4 All L1 (Text)--------------------------------- For information about the GNU Emacs and the GNU system, type C-h C-a. The Emacs editor uses the Ctrl key in combination with certain letters to perform special functions, can be used with the LISP (LISt Processing) artificial intelligence programming language, and supports hundreds of keyboard functions such as the vi editor. Table 3-8 shows a list of some common keyboard functions used in the Emacs editor. Unfortunately, the Emacs editor is not an easy-to-use editor because the user must memorize several key combinations to work effectively or use advanced features. If you run Emacs within a GUI environment, a graphical version of the Emacs editor is started. The graphical Emacs editor is much easier to use because the command-line key combinations are replaced by graphical icons, menus, and optional sidebars for many features. If you type emacs project4 within a GUI environment, you will start a graphical Emacs session, as shown in Figure 3-3. Another text editor that uses Ctrl key combinations for performing functions is the nano editor (based on the pine UNIX editor). Unlike vi or Emacs, nano is a very basic and easy-to-use editor that many Linux administrators use to quickly modify configuration files if they don’t need advanced functionality. If you type nano project4, you will see the following displayed on the terminal screen: GNU nano 2.2.4 File: project4.txt Hi there, I hope this day finds you well. Unfortunately we were not able to make it to your dining room this year while vacationing in Algonquin Park - I especially wished to see the model of the Highland Inn and the train station in the dining room. I have been reading on the history of Algonquin Park but no where could I find a description of where the Highland Inn was originally located on Cache lake. If it is no trouble, could you kindly let me know such that I need not wait until next year when I visit your lodge? Regards, Mackenzie Elizabeth © Cengage Learning. All rights reserved. No distribution allowed without express authorization.
© Cengage Learning. All rights reserved. No distribution allowed without express authorization. Key Description Ctrl+a Moves the cursor to the beginning of the line Ctrl+e Moves the cursor to the end of the line Ctrl+h Displays Emacs documentation Ctrl+d Deletes the current character Ctrl+k Deletes all characters between the cursor and the end of the line Esc+d Deletes the current word Ctrl+x + Ctrl+c Exits the Emacs editor Ctrl+x + Ctrl+s Saves the current document Ctrl+x + Ctrl+w Saves the current document as a new filename Ctrl+x + u Undoes the last change Table 3-8 Keyboard functions commonly used in the GNU Emacs editor Figure 3-3 A graphical Emacs session Source: Course Technology/Cengage Learning Editing Text Files 121 [Read16lines] ^G Get Help ^O WriteOut ^R Read File ^Y Prev Page ^K Cut Text ^C CurPos ^X Exit ^J Justify ^W Where Is ^V Next Page ^U UnCut Txt ^T Spell The bottom of the screen lists all the Ctrl key combinations. The ^ symbol represents the Ctrl key. This means that, to exit nano, you can press Ctrl+X (^X = Ctrl+X). If you are using a GUI environment, you can instead use the gedit editor to quickly edit text files. Although the gedit editor does not have the advanced functionality that vi or Emacs has, it is the easiest editor to use as it is functionally analogous to the Windows Wordpad and Notepad editors. If you type gedit project4 in a GUI environment, you will see the screen shown in Figure 3-4. 3
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3 - Weber State University

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