tar -cf - directory/ | (pv -s $(du -sb directory/ | awk '') -p -timer -rate -bytes > tarfile. Or if you want you can do it separately with a progress bar like this. On the newer versions of tar you can also do the following too XZ_OPT="-9e -threads=8" tar cJf directory Letâs have a directory with a lot of files and subdirectories, to compress it all we would do tar -cf - directory/ | xz -9e -threads=8 -c - > This should give you a newer version of XZ that supports multi threading. echo "deb debian main" | sudo tee /etc/apt//packages-matoski-com.list If no other options are given, zstd uses its defaults, which might not be the most efficient choices but could be sufficient for general purposes. Since the XZ utils in Debian/Ubuntu is an old version Iâve created my own backports that I can use. At the most basic level, all that is needed is often a single option: -compress (-z) or the command zstd to compress files -d, -decompress, -uncompress, or the command unzstd to decompress files. And as XZ compresses single files we are gonna have to use TAR to do itĪnd since the newer version of XZ supports multi threading, we can speed up compression quite a bit Iâve needed to compress several files using XZ. Iâve had an 16 GB SQL dump, and it managed to compress it down to 263 MB. For more information about everything we can do, you can go to the page man xz.XZ is one of the best compression tools Iâve seen, itâs compressed files so big to a fraction of their size. In this article, we only look at some examples for compressing and decompressing. This is a good tool for compressing files. Using -l we can see the information about a compressed file. It supports a wide variety of compression programs, namely: gzip, bzip2, lzip, lzma, lzop, zstd, xz and traditional compress. GNU tar is able to create and read compressed archives. We can test the integrity of the compressed files using the -t option. 8.1.1 Creating and Reading Compressed Archives. That means Raspbian buster desktop image without recommend. Tar -cJf *.txt Check the integrity of compressed files If xz is used at extreme compression level (level 9), much disk space and bandwidth can be saved. To achieve this same end, we can also use: The following is an example of the use to get a file with the extension tar.xz. Xz -k -qv android-x86_ Create a tar.xz file We can also enable the verbose mode with -v, as it's shown in the following: xz -k -q android-x86_ If we are interested in executing the compression in silent mode, we will only have to add the -q option. In case of having a small amount of system memory and wanting to compress a huge file, we will have the possibility of using the -memory option = limit ( the limit value can be in MB or as a percentage of RAM) to set a memory usage limit for compression: xz -k -best -memlimit-compress=10% android-x86_ Enable silent mode Some examples of how to set these levels are the following: xz -k -8 android-x86_ It has a high compression ratio in 7z format with LZMA and LZMA2 compression, supports many other archive formats such as XZ, BZIP2, GZIP, TAR, ZIP and WIM. We will also be able to use aliases as âfast ( it will be fast, but with less compression) to set as value 0 and âbest to set as value 9 ( slow but higher compression). See manual page of the configured command. This tool supports different preset levels of compression ( 0 to 9. The value will be passed to the compression command configured in tar..command.If an operation fails, for example if there is a compressed file with the same name, we will use the -f option to force the process: xz -kf android-x86_ Set compression levels We can also achieve the same with the option unxz: unxz android-x86_ Force compression To decompress a file, we will be able to use the -d option: xz -d android-x86_
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