⚡ Mastering VIM Editor – Shortcuts for the Modern DevOps Engineer

VIM (Vi IMproved) isn’t just a text editor — it’s a rite of passage. A timeless tool that’s faster than any GUI editor once you master the muscle memory. Whether you’re editing configs in /etc/, tweaking Dockerfiles, or live-patching in production like a boss — VIM is your best ally.

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🧠 Understanding the Modes in VIM

VIM operates in multiple modes — and switching between them is the secret sauce to your speed.

Mode	Purpose
Normal	Navigate and execute commands (default mode)
Insert	Edit text (press i, a, etc. to enter; Esc to exit)
Visual	Select and manipulate text (press v, V, or Ctrl + v)
Command-line	Save, quit, search (press : in Normal mode)

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🚀 Navigation Essentials

Move like a ninja through your files:-

• h – Left
• l – Right
• j – Down
• k – Up
• 0 – Start of the line
• ^ – First non-whitespace character
• $ – End of the line
• w – Next word
• b – Previous word
• gg – Start of file
• G – End of file
• :n – Jump to line number n
• Ctrl + o / Ctrl + i – Jump backward/forward in jump history

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✍️ Insert Mode Commands

Jump in and out of insert mode like a pro:

• i – Insert before cursor
• I – Insert at the start of line
• a – Append after cursor
• A – Append at the end of line
• o – New line below
• O – New line above
• Esc – Back to normal mode

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✂️ Editing and Manipulating Text

Keep your hands on the keyboard and your edits sharp:

• x – Delete character under cursor
• X – Delete character before cursor
• dw – Delete a word
• dd – Delete entire line
• d$ / D – Delete to end of line
• d0 – Delete to start of line
• u – Undo
• Ctrl + r – Redo
• yy – Yank (copy) a line
• yw – Yank a word
• p – Paste after cursor
• P – Paste before cursor
• ~ – Toggle case of character under cursor

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🔍 Searching & Replacing Like a Wizard

• /pattern – Search forward
• ?pattern – Search backward
• n / N – Repeat search forward/backward
• :%s/old/new/g – Replace all in file
• :s/old/new/g – Replace all in current line
• :%s/old/new/gc – Replace with confirmation

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🧩 Visual Mode (VIM only)

Selection mode that Vi dreams of having:

• v – Start character-wise selection
• V – Start line-wise selection
• Ctrl + v – Block-wise (column) selection
• y – Yank selection
• d – Delete selection
• > / < – Indent left/right

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🗂️ Managing Multiple Files & Splits

Because multitasking is life:

• :e filename – Open a file
• :w – Save
• :wq – Save and quit
• :q! – Quit without saving
• :split filename – Split window horizontally
• :vsplit filename – Split window vertically
• Ctrl + w + w – Switch between windows
• Ctrl + w + [h/j/k/l] – Move in split direction
• :tabnew filename – Open file in new tab
• gt / gT – Next / previous tab

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🧠 Pro Tips for DevOps Warriors

• :set number – Show line numbers (great for debugging logs or YAML)
• :set relativenumber – Relative line numbers (for quick d10j, etc.)
• :syntax on – Turn on syntax highlighting
• :set paste – Paste without auto-indentation issues
• :!command – Run shell command (yes, even terraform plan)

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💡 TL;DR Cheatsheet

Task	Command
Save and quit	:wq
Quit without saving	:q!
Undo	u
Redo	Ctrl + r
Search	/pattern
Replace all	:%s/old/new/g
Yank & paste line	yy, p
Jump to start	gg
Jump to end	G

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✨ “Once you go VIM, you never dim.” Start slow, stick with it, and soon your fingers will dance like they know the script.

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