$ mkdir test $ tar cavf test.tar.gz test test/ $ file test.tar.gz test.tar.gz: gzip compressed data, from Unix, last modified: Thu Mar 29 10:46:53 2012 $ rmdir test/ $ tar xavf test.tar.gz test/ $ mkdir test $ tar cavf test.tar.bz2 test test/ $ file test.tar.bz2 test.tar.bz2: bzip2 compressed data, block size = 900k $ rmdir test/ $ tar xavf test.tar.bz2 test/
