Vi Quit - Shell-Bash

Introduction

As a programmer, you must be aware of Vi - one of the most popular and oldest text editors used extensively in Unix-based systems. However, using Vi can be a bit daunting and confusing at times, especially when it comes to quitting the editor. This guide aims to help you understand how to quit Vi using the shell-bash commands.

Syntax

To quit Vi, you need to enter the command mode in Vi by pressing the Esc key, followed by typing the colon sign (:) at the bottom of the editor. Once you are in the command mode, you can enter any of the following commands to exit the editor:

• q: This command works when you haven't made any changes to the file. Simply type q and hit Enter, and Vi will exit without saving the changes (if any).
• q!: This command works when you have made changes to the file, but you don't want to save them. Simply type q! and hit Enter, and Vi will exit without saving the changes.
• wq: This command works when you have made changes to the file and want to save them before exiting Vi. Simply type wq and hit Enter, and Vi will save the changes and exit.
• wq!: This command works when you have made changes to the file, want to save them and exit, but you don't have the write permission. Simply type wq! and hit Enter, and Vi will save the changes and exit forcefully.

Examples

Here are some examples of how to use the Vi Quit commands in the shell-bash:

vi myfile.txt (opens the file 'myfile.txt' in Vi editor)

Once you are done editing the file, use one of the following commands to quit Vi:

:q (quits Vi without saving changes)
:q! (quits Vi and discards any changes made)
:wq (writes changes to the file and then exits)
:wq! (writes changes to the file and exits forcefully)

Conclusion

Knowing how to quit Vi using shell-bash commands is an essential skill for programmers, as it helps them easily and quickly exit the editor without losing any changes made. The commands listed in this guide are simple and easy to remember, making the editing process less daunting and more enjoyable. So go ahead and use Vi editor with confidence!