Extract a bz2 or bzip2 File

Posted July 11, 2006 by Quinn McHenry in UNIX

You have downloaded a file that ends in .bz2. Now, what do you do? This tech-recipe describes how to work with these files.

A file with an extension of bz2 has been compressed with the bzip2 program. Programs like bzip2 and gzip work on a single file, so they are not themselves an archive of multiple files like a zip archive can be.

To extract the file file.bz2, use the following:

bzip2 -d file.bz2

This will produce an uncompressed file in the current directory called “file” and will delete the original bz2 archive. If you want to keep the original file, add the -k option as follows:

bzip2 -dk file.bz2

A useful option for bzip2 is the -c switch which causes bzip2 to write the uncompressed output to stdout which can easily be redirected to another option. For instance, to search the compressed file file.bz2 for the string tech-recipes, use the following:

bzip2 -dc file2.bz2 | grep tech-recipes


About Quinn McHenry

Quinn was one of the original co-founders of Tech-Recipes. He is currently crafting iOS applications as a senior developer at Small Planet Digital in Brooklyn, New York.
View more articles by Quinn McHenry

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