Linux - Vim

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Vim is a text editor that is included with Ubuntu that allows you to modify configuration files.
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To Create a Text File
Simply type vim filename
Capitalization matters. test.txt, Test.txt, and TEST.TXT are different files.
File extension does not matter in Linux CLI, but makes it easier to know what files are.
To Edit Files
To open a file simply type vim filename
Type i to enter INSERT mode.
Hit esc key to exit INSERT mode
Type :q to exit file if you made no edits
Type :wq to save and quit
Type :q! to exit without saving changes
Protected configuration files will require the sudo command to open and edit: sudo vim group
To Find Words Within Files
Type / and then the word you are looking for: /bob
Press ENTER
Lowercase n searches for text instance down, uppercase N searches for the next instance up