Luke Angel
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October 15, 2025

How to Break a single MD file into multiple docs

by Luke Angel

# How to Extract Individual Files from COMBINED_ALL_DOCUMENTS_FINAL.md

## Overview

The file COMBINED_ALL_DOCUMENTS_FINAL.md contains all 11 markdown documents combined into one file with clear delimiters. This guide shows you how to extract them back into separate files.

## Delimiter Format

Each file is wrapped with clear delimiters:

“`

========== FILE_START: filename.md ==========

[file content here]

========== FILE_END: filename.md ==========

“`

## Method 1: Using PowerShell (Windows)

“`powershell

Navigate to the av1 directory

cd

Run this script to extract all files

$content = Get-Content “your_combainer .md” -Raw

$files = @()

$pattern = ‘========== FILE_START: (.+?) ==========\s*\n([\s\S]*?)\n========== FILE_END: \1 ==========’

$matches = [regex]::Matches($content, $pattern)

foreach ($match in $matches) {

$filename = $match.Groups[1].Value

$filecontent = $match.Groups[2].Value

$filecontent | Out-File -FilePath $filename -Encoding UTF8

Write-Host “Extracted: $filename”

}

Write-Host “Extraction complete! $($matches.Count) files extracted.”

“`

## Method 2: Using Python

“`python

import re

Read the combined file

with open(‘your_file.md’, ‘r’, encoding=’utf-8′) as f:

content = f.read()

Extract each file

pattern = r’========== FILE_START: (.+?) ==========\s*\n([\s\S]*?)\n========== FILE_END: \1 ==========’

matches = re.findall(pattern, content)

for filename, filecontent in matches:

with open(filename, ‘w’, encoding=’utf-8′) as f:

    f.write(filecontent)

print(f’Extracted: {filename}’)

print(f’Extraction complete! {len(matches)} files extracted.’)

“`

## Method 3: Using Bash/Linux

“`bash

#!/bin/bash

Read the combined file and extract each section

awk ‘

/^========== FILE_START:/ {

filename = $3;

getline;  # skip blank line

output = 1;

next;

}

/^========== FILE_END:/ {

output = 0;

close(filename);

print “Extracted: ” filename > “/dev/stderr”;

next;

}

output {

print > filename;

}

‘ COMBINED_ALL_DOCUMENTS_FINAL.md

“`

## Method 4: Manual Extraction

If you prefer to extract files manually:

  1. Open COMBINED.md in your text editor

  2. Search for ========== FILE_START: filename.md ==========

  3. Copy everything between the START and END delimiters

  4. Paste into a new file with the appropriate filename

  5. Repeat for each file

## Verification

After extraction, verify the files:

PowerShell:

“`powershell

Get-ChildItem *.md | Select-Object Name, Length | Sort-Object Name

“`

Bash:

“`bash

wc -l *.md | sort -n

“`

Expected Output:

– x markdown files extracted

– Total lines should match the original files (approximately 3,600+ lines combined)

## Quick Extraction Script (Windows)

Save this as extract_files.ps1 in the av1 directory:

“`powershell

$combined = Get-Content “COMBINED_ALL_DOCUMENTS_FINAL.md” -Raw

$pattern = ‘(?s)========== FILE_START: (.+?) ==========\r?\n(.+?)\r?\n========== FILE_END: \1 ==========’

[regex]::Matches($combined, $pattern) | ForEach-Object {

$filename = $_.Groups[1].Value

$content = $_.Groups[2].Value

Set-Content -Path $filename -Value $content -Encoding UTF8

Write-Host “✓ Extracted: $filename” -ForegroundColor Green

}

“`

Then run: .\extract_files.ps1

## Notes

– All files are UTF-8 encoded

– Line endings are preserved from the original files

– The combined file maintains all original formatting and content

– File delimiters are on their own lines for clean extraction

## Support

If you encounter issues:

  1. Verify the delimiter format is intact

  2. Check file encoding (should be UTF-8)

  3. Ensure no special characters in filenames

  4. Verify line ending consistency

## File Statistics

Total combined file size: ~3,600 lines

Number of documents: 11

Format: Markdown (.md)

Encoding: UTF-8

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