This is a major difference with vi, where you are presented with an empty screen. This looks like any other application menu and indeed, a lot of emacs functionality is accessible from here. After the menu, there is a large editing space. This is called the main buffer where you type your text or view the contents of a file. When emacs edits an existing file on disk, a copy of that document is first loaded into memory and then displayed in the main editing window. As you work through the document, all the changes you make in the editing space are applied to the buffer; the original file on disk remains unchanged.
The same applies for a new file as well: all changes are made on the buffer until you save it. After the main buffer, a highlighted bar of text is displayed near the bottom of the screen. This is called the status bar or the mode line. Among other things, the status bar shows:. Finally, a single line of space exists below the status bar where the screen ends.
This area is called the mini buffer. Emacs is a command driven tool and the mini buffer is your main point of interaction with emacs. This is where emacs prompts you for command inputs or shows you the output. Instead, when emacs needs to start a new window, its main buffer is split into two parts, like having two frames in a browser.
The top half shows the main buffer and the bottom half displays the new content. An example of emacs spawning a new window is when you are accessing its help files or tutorials. We will talk more about windows later. Now that we are familiar with the user interface, it may be tempting to start typing and messing around. Like most things in Linux, emacs relies heavily on keyboard commands. Fortunately, most of these keystrokes are fairly standard and easy to remember. When you open a file with emacs, you can just start typing and issue commands at the same time.
Command functions in emacs usually involve two or three keys. The most common is the Ctrl key, followed by the Alt or Esc key. Just like the Ctrl key, emacs uses multi-key functions with the meta key.
The Esc key usually plays its part when you try to back off from a command or prompt. Just keep pressing it till you get out of trouble. Once you have made some changes to your document or written some text, you would want to save it. The mini buffer will show a message like this:.
If there is unsaved data, the mini-buffer will show a prompt like this:. This would take you back to command prompt. Fortunately, in emacs there are not too many of these to remember and they are quite intuitive. Here is a list:. We will now learn about some basic editing functions in emacs. To mark a text region similar to selecting text in popular word processors , follow these steps:.
Move the cursor to the position where you would like the selection to start. You can use any of the methods described before to move the cursor. The mini buffer will show a status message of Mark set. Move the cursor to the position where you want the region to end. Again, use any of the key combinations described before. The mini buffer will show a status message of Mark deactivated. If you want to select the all the contents of the main buffer i. The contents will be pasted here. For deleting a whole word, move the cursor at the beginning of a word and press M-d.
For deleting multiple words, hold the meta key down and keep pressing d. Words will start deleting one by one. For deleting a whole line, position the cursor where you want it to be and press C-k. This would delete the text right up to the end of the line on screen. For deleting a sentence, press M-k. Just so that we know, emacs considers a sentence to have completed when it sees two spaces after the full stop. This is unlike traditional publishing where a new sentence begins after a single space following a full stop.
Undoing the last operation is simple. How do I do that in Ubuntu Just use that. If you're not sure how to proceed for any given file s , you could just update the question with the details.
And as Alberto Zaccagni said, just create a symlink if you want an alternative name to access the directory. The first argument is the folder where you want the folders to be, the second one is where emacs usually looks for its configuration files, so with this approach you can put the folder wherever you like.
This works for OSX, so perhaps for you too. The user-emacs-directory is where you would set the equivalent of. I have everything related to Emacs in my user-emacs-directory.
If you use package manager, the elpa directory would be automatically crated there also. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 8 years, 2 months ago. Emacs is one such text editor that offers some of the best features to its users. It is an open-source, cross-platform editor that is highly customizable and provides a user-friendly interface to its users.
Providing features like multiple editing modes, full Unicode support for scripts, text manipulation tools, and integration with numerous external tools like the shell and git clearly gives an indication of how powerful it is. In addition to this, it not only acts as a text editor but can also be set up to provide other functionalities such as project planner, debugger, email client, etc. Hence, in this article, we will be looking at how you can download and install Emacs on your Ubuntu system.
Ubuntu offers multiple ways for users to install Emacs on their computers. Let us look at some of them:. Snaps are Canonical developed applications that can be installed on almost all Linux distributions.
A considerable advantage of using Snaps over using Ubuntu repositories is that it provides users with the most up-to-date software without sacrificing the reliability of your working environment. Installing applications through Snap is extremely easy. Users can install Emacs by running the following command in the command line:. Simply install the emacs package. Emacs To install the latest Emacs It was quick and easy, but if you want a trivial installation then simply install the ready-made Ubuntu package for Emacs
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