# Open nano (blank file)
nano

# Open/create a specific file
nano filename.txt

# Open file at specific line number
nano +15 filename.txt

# Open file at specific line and column
nano +15,7 filename.txt

# Open file as read-only
nano -v filename.txt

# Open multiple files
nano file1.txt file2.txt file3.txt

# Save current file
Ctrl + O
# Then press Enter to confirm

# Save with a new name (Save As)
Ctrl + O
# Type new filename and press Enter

# Save and exit
Ctrl + O → Enter → Ctrl + X

# Exit without saving
Ctrl + X → N (when prompted)

# Open additional file
Alt + <
# Or: Alt + Shift + ,

# Switch between open files
Alt + ,  # Previous file
Alt + .  # Next file

# Close current buffer
Ctrl + X

# Insert another file into current one
Ctrl + R
# Then type filename and press Enter

# Cut current line
Ctrl + K

# Cut from cursor to end of line
Alt + T

# Copy current line (without deleting)
Alt + 6

# Paste cut/copied text
Ctrl + U

# Cut selected text (after marking)
Ctrl + K

# Start selection (mark text)
Alt + A
# (Or: Ctrl + 6)

# Move cursor to select text
# Use arrow keys or navigation commands

# Cut marked text
Ctrl + K

# Copy marked text
Alt + 6

# Cancel selection
Alt + A (again)

# Undo last action
Alt + U

# Redo last undone action
Alt + E

# Delete character under cursor
Ctrl + D

# Delete character before cursor
Backspace

# Delete word to the right
Ctrl + Delete

# Delete from cursor to end of line
Ctrl + K (on empty marked region)

# Search forward
Ctrl + W
# Type search term and press Enter

# Search backward
Alt + W (after a forward search)

# Search next occurrence
Alt + W

# Search previous occurrence
Alt + Q

# Toggle case-sensitive search
Alt + C (while in search prompt)

# Toggle regex search
Alt + R (while in search prompt)

# Start replace function
Ctrl + \

# Type text to find → Enter
# Type replacement text → Enter

# Options:
Y - Replace this instance
N - Skip this instance
A - Replace all instances
Ctrl + C - Cancel

# Case-insensitive search
Ctrl + W → Alt + C → type search term

# Regex search
Ctrl + W → Alt + R → type regex pattern

# Search backward
Ctrl + W → Alt + B → type search term

# Open Python file (auto-highlighted)
nano script.py

# Open shell script
nano script.sh

# Open configuration file
nano config.conf

# Show line numbers
Alt + #
# Or: Alt + Shift + 3

# Toggle line numbers on/off
Alt + # (again)

# Go to specific line
Ctrl + _
# Type line number and press Enter

# Enable auto-indent (usually on by default)
Alt + I

# Indent current line
Alt + }

# Unindent current line
Alt + {

# Start spell checker (if installed)
Ctrl + T

# Requires 'spell' or 'aspell' package:
pkg install aspell aspell-en

nano ~/.nanorc

# ~/.nanorc - Nano configuration file

## Enable syntax highlighting
include /data/data/com.termux/files/usr/share/nano/*.nanorc

## Show line numbers by default
set linenumbers

## Auto-indent new lines
set autoindent

## Convert typed tabs to spaces
set tabstospaces

## Set tab size to 4 spaces
set tabsize 4

## Enable smooth scrolling
set smooth

## Enable mouse support
set mouse

## Don't wrap long lines
set nowrap

## Show a guide bar at column 80
# set guidestripe 80

## Backup files on save
set backup
set backupdir "~/nano_backups"

## Remember cursor position
set positionlog

## Allow suspended mode (Ctrl+Z)
set suspend

## Enable multiple file buffers
set multibuffer

## Show cursor position constantly
set constantshow

## Smart home key (toggle between start of text and start of line)
set smarthome

## Use bold instead of reverse video for title bar
set titlecolor bold,white,blue
set statuscolor bold,white,green
set keycolor bold,white,blue
set functioncolor green

# Create backup directory
mkdir -p ~/nano_backups

# Reload nano with new config
# (just open nano again)
nano test.txt

# Open config file
nano ~/.bashrc

# Add line at the end
# Navigate: Ctrl + End (Alt + /)
# Type: alias ll='ls -la'

# Save and exit
# Ctrl + O → Enter → Ctrl + X

# Create new shopping list
nano shopping-list.txt

# Type your list
# Milk
# Bread
# Eggs

# Save with Ctrl + O → Enter
# Exit with Ctrl + X

# Open file
nano document.txt

# Replace all "old" with "new"
# Press: Ctrl + \
# Search for: old
# Replace with: new
# Press: A (to replace all)

# Open multiple files
nano file1.txt file2.txt file3.txt

# Edit first file
# ...make changes...

# Switch to next file
# Alt + .

# Edit second file
# ...make changes...

# Save all and exit
# Ctrl + O → Enter (for each file)
# Ctrl + X (when all saved)

# Open two files
nano file1.txt file2.txt

# In file1.txt, mark text
# Alt + A → select text → Alt + 6 (copy)

# Switch to file2.txt
# Alt + .

# Paste
# Ctrl + U

# Save both files
# Ctrl + O → Enter
# Alt + . (switch back)
# Ctrl + O → Enter

# Create Python file (with syntax highlighting)
nano hello.py

# Type Python code:
#!/usr/bin/env python3

def main():
    print("Hello, World!")
    
if __name__ == "__main__":
    main()

# Save: Ctrl + O → Enter
# Exit: Ctrl + X

# Make executable and run
chmod +x hello.py
python hello.py

# Open in read-only mode
nano -v important-file.txt

# View only, cannot save changes
# Exit with Ctrl + X

# Open main file
nano main-document.txt

# Position cursor where you want to insert

# Insert another file
# Ctrl + R
# Type: section2.txt
# Press Enter

# Content inserted at cursor position

# If Ctrl key doesn't work in Termux:
# Use Volume Down as Ctrl key (Termux default)
# Or enable Extra Keys row in Termux settings

# If colors don't show:
# Make sure syntax files are available
ls /data/data/com.termux/files/usr/share/nano/

# If mouse support issues:
# Add to .nanorc: set mouse

# Useful nano command-line options for Termux:

nano -l filename.txt          # Show line numbers
nano -i filename.txt          # Auto-indent
nano -E filename.txt          # Convert tabs to spaces
nano -w filename.txt          # No line wrapping
nano -m filename.txt          # Enable mouse
nano -c filename.txt          # Constantly show cursor position
nano -B filename.txt          # Backup before saving
nano -A filename.txt          # Enable smart home key
nano -S filename.txt          # Enable smooth scrolling
nano -Y python script.py      # Force syntax highlighting type

# Combine multiple options:
nano -liEmwc filename.txt     # Line numbers, indent, tabs to spaces, mouse, cursor pos

# Edit system file
nano ~/.bashrc

# Create quick note
nano notes.txt

# View file (read-only)
nano -v important.txt

# Edit with line numbers
nano -l script.sh

# Edit multiple related files
nano index.html style.css script.js

# Save this guide to your device
nano ~/nano-guide.md
# Paste this content
# Save: Ctrl+O → Enter → Ctrl+X

# View anytime with:
nano ~/nano-guide.md
# Or use any markdown viewer

nano practice.txt
# Type: "Hello Termux"
# Save: Ctrl+O → Enter
# Exit: Ctrl+X
# Verify: cat practice.txt

nano practice.txt
# Type multiple lines
# Cut a line: Ctrl+K
# Move cursor
# Paste: Ctrl+U
# Save and exit

nano practice.txt
# Add text with repeated words
# Replace: Ctrl+\
# Find: "old"
# Replace: "new"
# Choose: A (all)

nano file1.txt file2.txt
# Edit file1
# Switch: Alt+.
# Edit file2
# Switch back: Alt+,
# Save all and exit