⚡ Mosr used VI commands in Linux (VIM text Editor)

💎 Things we are going to learn:
- Quick Navigation
- Text Replacement 
- Find match
- Jump to line number 
- Highlight match
- Deleting lines 
- Enable Line number 

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🔹 Replace Text in Vi/Vim 📝
✅ Replace first occurrence in a line:
:s/old_text/new_text/

✅ Replace all occurrences in a line:
:s/old_text/new_text/g

✅ Replace in the entire file:
:%s/old_text/new_text/g

✅ Replace with confirmation:
:%s/old_text/new_text/gc

✅ Replace in specific lines (e.g., 10-20):
:10,20s/old_text/new_text/g

✅ Replace using regex (e.g., digits → NUMBER):
:%s/[0-9]/NUMBER/g

✅ Replace text containing / using # as a delimiter:
:%s#path/to/old#path/to/new#g

✅ Find a match 
/match

✅ Jump to next match
n

✅ Jump to previous match
N

✅ Enable Search Highlighting
:set hlsearch

🔄 Disable Highlighting
:nohlsearch

✅ Search and Highlight a Word
/word

✅ Delete a Single Line
10d

🔄 Delete Multiple Lines from the Current Position
5dd

🔥 Delete All Lines
:%d

✅ Temporarily Enable Line Numbers
:set number

❌ Disable Line Numbers
:set nonumber

🔄 Enable Relative Line Numbers (Useful for navigation)
:set relativenumber

🚀 Make Line Numbers Permanent
To enable line numbers every time Vim starts, add this to your nano ~/.vimrc
set number


🏷️ Delete a Range of Lines
10,20d

📷 Delete the Current Line
dd

⚡ Undo changes (deletion)
[ESC]+u

🔁 Redo an Undo
ctrl + r

✅ Copy a Specific Line (10th line)
:10y

✅ Paste last copy (This pastes below the cursor, P above the cursor)
[ESC] + p

✅ Copying the Current Line
:yy

⚡ To copy lines 10 to 20, use
:10,20y

⚡ Add 5 lines
(- O 5 lines after existing line
- o 5 lines before the existing line)
ESC 5O ESC
ESC 5o ESC

🔹 Jump to Specific Lines number 
🔸 Jump to line 50: :50
🔸 Jump to first line: :1
🔸 Jump to last line: :$
🔸 Open a file at line 100:
vi +100 file.txt