I'd like to request the addition of the pixz compression tool.     It's a wonderful extension to the standard xz (LZMA) compression tool that allows random access to files in the archive.  For large tarballs, the ability to extract any arbitrary file, and show the archive index, without reading the rest of the files in the archive (more or less constant time).     I deal with 2-3 GB archives in my day to day work and I am guessing that I'll be dealing with a lot more as I get