GoFileCounter - Free Line Counter for Large Text Files

Quickly count lines in your text files with GoFileCounter, a free, lightweight command-line tool written in Go. It scans the folder you run it from, including all subfolders, and displays a separate line count for each matching .txt file.

Whether you are checking exported datasets, reviewing text-based logs, or working with large lists, GoFileCounter provides straightforward results without requiring you to open files in a text editor.

Key Features

• Line counts for individual files: See each file's path alongside its line count.
• Automatic subfolder scanning: Process matching text files throughout the current folder and its subfolders in a single run.
• Memory-efficient reading: Files are read in fixed-size chunks, keeping the reading buffer small even when a file contains extremely long lines.
• Suitable for large text files: Process multi-gigabyte files without loading their entire contents into memory. Processing time depends on file size and storage speed.
• Local processing: Your files stay on your computer. No uploads, accounts, or cloud services are required for counting.
• Read-only operation: The tool reads your files without modifying their contents.
• Free download with source code: The Go source code is included alongside the tool.

How to Use

1. Download and extract the package.
2. Open a terminal in the folder containing the files you want to scan.
3. Run GoFileCounter from that folder.
4. Review the file paths and line counts displayed in the terminal.

The scan starts in the current working directory and automatically includes its subfolders.

Example Output

notes.txt: 42
data\records.txt: 1250000
archive\export.txt: 87000

Source Code Included

Your download includes the Go source code, allowing you to inspect the implementation, understand how the counting works, and adapt the tool to your own workflow. You can also use it as a practical example of file reading and directory traversal in Go.

Building a version from source requires a compatible Go development environment.

Usage Notes

• This is a command-line tool; results are displayed as text in the terminal.
• File matching is case-sensitive: names must end in lowercase .txt. Files ending in .TXT are skipped.
• Intended for UTF-8 and other ASCII-compatible text files using LF or CRLF line endings.
• Blank lines are included in the count.
• Results are shown separately for each file. A combined line total and a file count are not displayed.
• If a file or folder cannot be accessed, or a read error occurs, the tool reports the error and stops the scan.

Download GoFileCounter for free - Go source code included.