> the fact that you cannot get a valid bzip2 file by cat-ing 2 compressed files
TIL. Now that's why gzip has a file header! But, tar.gz compresses even better, that's probably why it hasn't caught on.
tar packs multiple files into one. If you concatenate two gzipped files and unzip them, you just get a concatenated file.
tar packs multiple files into one. If you concatenate two gzipped files and unzip them, you just get a concatenated file.