Edit Command Com File

Further, as in Linux, some Windows tools implement unusual filesystem access patterns to handle file updating and don’t actually edit files in-place: When apps/tools save changes to a file, the original files are often deleted and re-created, etc.

Starts MS-DOS Editor, which creates and changes ASCII text files.

Syntax

Parameters

Remarks

• For additional help, open MS-DOS Editor, and then press the F1 key.
• Some monitors do not support the display of shortcut keys by default. If your monitor does not display shortcut keys, use /b.

Examples

To open MS-DOS Editor, type:

To create and edit a file named newtextfile.txt in the current directory, type:

The thing you have to understand about vi and its work-alike editorsis modality. Most programs have just one mode, accepting input and placing itat the cursor. This is what you probably expect from a program. But vi hasother modes. When you start vi, you’ll be in “Normal” mode, which is reallycommand mode. When you are in Normal mode, whatever you type is considerednot to be input, but commands that vi will try to execute.

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This may sound a little crazy, but it is actually a very powerful way to editdocuments. Even if you hate it, the ubiquity of vi means that you’re goingto need to learn the basics, because sometimes you just have to use it. Onthe other hand, if you enjoy working at a command line, then you may end uplovingvi.

Lesson 1: How to Quit vi¶

Since vi is the default editor, there’s a good chance you got dropped intoit without knowing it. This can be extremely frustrating if you don’t knowyour way around the program.

To exit viwithout saving changes, hit Escape a couple of times toensure you are in Normal mode, and then type:

Lesson 2: Editing with vi¶

Start vi and press i. The cursor may change shape, and INSERT isdisplayed at the bottom of the screen (in most vi clones). You are now ininsert mode — all your keystrokes are entered into the current bufferand are displayed to the screen.

Hit the Escape key. The cursor changes shape again, and INSERT hasdisappeared. You are back in Normal mode. Hitting Escape a few timeswill pretty much always cancel whatever you are doing and return you to Normalmode.

Command mode is also where you move around in the file. On most systems, youcan use the arrow keys to move the cursor. If that fails, cursor movement canbe accomplished with the hjkl keys:

vi has its own command line, which you access by typing a colon. Commands typed at the command line will not be executed until you hit Enter, just like in the shell.

Many of the commands that you will use in command mode begin with a colon. For example, the command to quit is :q, as we learned in Lesson 1 above. Actually, in Lesson 1 we added !, which tells vi to “force” the operation. If you have edited the file, typing :q will not immediately exit the program, but instead produce this error message:

To save your changes, use the :w command (“Write”). You can save and quit all in one go by typing both commands together:

Of course, if you started vi without giving a file name, you’ll need to provide one. For example, to save your working file as test.txt, you would type:

Try editing some text now.

• Start vi
• Hit i to go to Insert mode.
• Type some text.
• Hit Escape to return to Normal mode.
• Type :w test.txt to save your work
• Type :q to quit

vi Quick Reference¶

Additional Resources¶