This cheat sheet provides a quick reference for some common Bzip2 commands and concepts. Bzip2 is a compression utility used to compress and decompress files. It's known for its high compression ratio and efficiency.
Bzip2 is usually pre-installed on most Unix-like systems. To check if it's installed, you can run:
If it's not installed, you can install it using your system's package manager (e.g.,
Bzip2 is primarily used for compressing files and reducing their size.
Compress a file:
Compress a file and specify the compression level (1-9):
bzip2 -9 file.txt
To decompress Bzip2-compressed files:
Decompress a file:
bzip2 -d compressed_file.bz2
Decompress a file and keep the original compressed file:
bzip2 -dk compressed_file.bz2
Compression with Tar
Bzip2 is often used in combination with
tar to create compressed archive files.
- Create a Bzip2-compressed Tar archive:
tar cvjf archive.tar.bz2 directory/
Viewing Compression Information
To view information about a Bzip2-compressed file:
- View compression details:
bzcat compressed_file.bz2 | file -
You can calculate the compression ratio of a Bzip2-compressed file.
- Determine the compression ratio of a file:
original_size=$(wc -c < original_file)
compressed_size=$(wc -c < compressed_file.bz2)
compression_ratio=$(bc -l <<< "scale=2; ($original_size - $compressed_size) / $original_size * 100")
echo "Compression ratio: $compression_ratio%"
This cheat sheet covers some common Bzip2 commands and concepts. Bzip2 is a powerful compression utility used to reduce file sizes efficiently; refer to the official Bzip2 documentation for more in-depth information and advanced usage.