FastFinder is a powerful command-line tool designed to quickly search for keywords in .txt files within a specified directory. With its multi-threading capabilities, FastFinder can process millions of lines per second, making it ideal for handling large datasets efficiently.
- Multi-threaded processing: Utilizes up to 16 threads for faster execution.
- Efficient file handling: Reads large files with a buffer size of 1 MB.
- User-friendly output: Saves all matching lines to a specified output file.
- Real-time statistics: Provides real-time information on the number of lines read and saved.
To run FastFinder, use the following command:
fastfinder.exe <file/directory> <keyword> <output>fastfinder.exe "C:\Users\user\Downloads\Desktop" login output.txt| Parameter | Description |
|---|---|
<file/directory> |
The path to the .txt file or the directory to search in. |
<keyword> |
The keyword to search for in the text files. |
<output> |
The name of the output file where results will be saved. |
You can download the latest release of FastFinder for Windows from the following link:
To compile FastFinder from source, use the following command:
x86_64-w64-mingw32-gcc -o fastfinder.exe fastfinder.c -lpthread -static -O3 -march=native -mtune=native -ffast-math -funroll-loops -flto -s-lpthread: Links the POSIX thread library to enable multi-threading.-static: Statically links libraries, resulting in a single executable.-O3: Enables high-level optimizations for better performance.-march=nativeand-mtune=native: Optimize the code for the current architecture.-ffast-math: Allows aggressive optimizations for floating-point math.-funroll-loops: Unrolls loops for improved performance.-flto: Enables Link Time Optimization, further optimizing the final binary.-s: Strips symbols from the output file to reduce its size.
FastFinder uses the following constants to manage its performance:
#define MAX_THREADS 16 // Maximum number of threads for processing files.
#define BUFFER_SIZE 1048576 // Size of the buffer used for reading files (1 MB).
#define FILE_QUEUE_SIZE 1000 // Maximum number of files that can be queued for processing.- Multi-threading: FastFinder utilizes Windows threads to process multiple files simultaneously, allowing for rapid keyword searching across large datasets.
- Critical Sections: To ensure thread safety when accessing shared resources, FastFinder uses critical sections to lock and unlock access to output files and the file queue.
- Interlocked Operations: To safely update counters for lines read and saved across threads, FastFinder employs interlocked operations that prevent race conditions.
- Memory Management: FastFinder dynamically allocates memory for buffers and file names, ensuring efficient use of resources.
FastFinder is optimized to read millions of lines per second, making it one of the fastest keyword search tools available for Windows.
Contributions are welcome! If you have suggestions for improvements or find bugs, please open an issue or submit a pull request.
Thank you for using FastFinder! Happy searching! 🎉