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Text File Merger Examples
The Text File Merger combines multiple text files into a single unified file. Below are practical examples for merging logs, CSV data, configuration snippets, documentation, and code files.
Simple File Concatenation (No Separator)
// File 1: header.html
<!DOCTYPE html>
<html lang="en">
<head><title>My Page</title></head>
<body>
// File 2: content.html
<main>
<h1>Welcome</h1>
<p>Page content here.</p>
</main>
// File 3: footer.html
<footer><p>© 2024</p></footer>
</body>
</html>
// Merged output (no separator)
<!DOCTYPE html>
<html lang="en">
<head><title>My Page</title></head>
<body>
<main>
<h1>Welcome</h1>
<p>Page content here.</p>
</main>
<footer><p>© 2024</p></footer>
</body>
</html>
Merge with File Name Headers
// File 1: database.conf
host=localhost
port=5432
// File 2: cache.conf
host=localhost
port=6379
// File 3: queue.conf
host=localhost
port=5672
// Merged output (with file name headers)
# === database.conf ===
host=localhost
port=5432
# === cache.conf ===
host=localhost
port=6379
# === queue.conf ===
host=localhost
port=5672
Merge Log Files from Multiple Servers
// server1.log
2024-01-15 10:00:01 INFO Request: GET /api/users
2024-01-15 10:00:02 INFO Response: 200 OK
// server2.log
2024-01-15 10:00:01 INFO Request: GET /api/products
2024-01-15 10:00:03 ERROR Database timeout
// server3.log
2024-01-15 10:00:02 INFO Request: POST /api/orders
2024-01-15 10:00:04 INFO Response: 201 Created
// Merged output (with separator line)
# === server1.log ===
2024-01-15 10:00:01 INFO Request: GET /api/users
2024-01-15 10:00:02 INFO Response: 200 OK
# === server2.log ===
2024-01-15 10:00:01 INFO Request: GET /api/products
2024-01-15 10:00:03 ERROR Database timeout
# === server3.log ===
2024-01-15 10:00:02 INFO Request: POST /api/orders
2024-01-15 10:00:04 INFO Response: 201 Created
Merge CSV Files (Same Schema)
// january.csv
id,name,amount
1,Alice,150.00
2,Bob,200.00
// february.csv
id,name,amount
3,Carol,175.00
4,Dave,225.00
// march.csv
id,name,amount
5,Eve,300.00
// Merged output (header from first file only)
id,name,amount
1,Alice,150.00
2,Bob,200.00
3,Carol,175.00
4,Dave,225.00
5,Eve,300.00
When merging CSV files with the same schema, skip the header row from all files except the first to avoid duplicate headers in the output.
Merge Documentation Sections
// intro.md
# My Project
A brief description of the project.
## Installation
Run `npm install` to get started.
// usage.md
## Usage
```bash
npm start
```
// api.md
## API Reference
### GET /api/users
Returns a list of users.
// Merged output (with blank line separator)
# My Project
A brief description of the project.
## Installation
Run `npm install` to get started.
## Usage
```bash
npm start
```
## API Reference
### GET /api/users
Returns a list of users.
Merge SQL Migration Files
// 001_create_users.sql
CREATE TABLE users (
id BIGINT PRIMARY KEY,
email VARCHAR(255) UNIQUE NOT NULL
);
// 002_create_posts.sql
CREATE TABLE posts (
id BIGINT PRIMARY KEY,
user_id BIGINT REFERENCES users(id),
title VARCHAR(500)
);
// 003_add_indexes.sql
CREATE INDEX idx_posts_user_id ON posts(user_id);
// Merged output (with SQL comment headers)
-- === 001_create_users.sql ===
CREATE TABLE users (
id BIGINT PRIMARY KEY,
email VARCHAR(255) UNIQUE NOT NULL
);
-- === 002_create_posts.sql ===
CREATE TABLE posts (
id BIGINT PRIMARY KEY,
user_id BIGINT REFERENCES users(id),
title VARCHAR(500)
);
-- === 003_add_indexes.sql ===
CREATE INDEX idx_posts_user_id ON posts(user_id);
Line Ending Normalization
// File A: Windows CRLF (from Windows editor)
line1\r\n
line2\r\n
// File B: Unix LF (from Linux server)
line3\n
line4\n
// Merged output normalized to Unix LF
line1\n
line2\n
line3\n
line4\n
Merge with Custom Separator
// Separator: ========================================
// File 1: section1.txt
Introduction content here.
// File 2: section2.txt
Main content here.
// Merged output
Introduction content here.
========================================
Main content here.
Shell Command Equivalent
// Simple concatenation
cat file1.txt file2.txt file3.txt > merged.txt
// With headers
for f in *.txt; do
echo "=== $f ==="
cat "$f"
echo ""
done > merged.txt
// CSV merge (skip headers after first file)
head -1 january.csv > all.csv
tail -n +2 january.csv >> all.csv
tail -n +2 february.csv >> all.csv
tail -n +2 march.csv >> all.csv
Common Use Cases
- Combine log files from multiple servers for analysis
- Merge CSV exports from different time periods
- Assemble documentation from multiple contributor files
- Combine SQL migration scripts into a single file
- Merge configuration snippets into a complete config
- Combine keyword lists from multiple sources
- Assemble HTML pages from header, content, and footer files
Upload your files to the Text File Merger, set your separator and header options, and download the merged result as a single file.