![]() ![]() To display only a portion of the text, pass the command output to another command like the head command shown above or to a grep command that includes the text you are searching for. And early in the twentieth century came the great Regarded this earth with envious eyes, and slowly and surely drew their Gulf of space, minds that are to our minds as ours are to those of theīeasts that perish, intellects vast and cool and unsympathetic, Themselves and ready to welcome a missionary enterprise. At most terrestrial menįancied there might be other men upon Mars, perhaps inferior to The mental habits of those departed days. Of human danger, or thought of them only to dismiss the idea of life No one gave a thought to the older worlds of space as sources It is possible that the infusoria under the microscope do With infinite complacency men went to and fro over this globeĪbout their little affairs, serene in their assurance of their empire Scrutinise the transient creatures that swarm and multiply in a drop of Studied, perhaps almost as narrowly as a man with a microscope might ![]() Themselves about their various concerns they were scrutinised and Greater than man’s and yet as mortal as his own that as men busied That this world was being watched keenly and closely by intelligences No one would have believed in the last years of the nineteenth century Wells' "The War of the Worlds" is displayed from a file compressed with bzip2. In the example below, the top 20 lines of H. So we’ve demonstrated that xz does indeed create much smaller archives than gzip. But at 70 seconds, xz also took nearly 18 times as long! Compression levels six and beyond hugely increased the compression time for a negligible 1% reduction in archive size With compression level 5, xz produced the smallest archive at 29 MB, which was 69% smaller than pig z.xz used compression level 1 out of 9 for this In the same 4 seconds, xz compressed the file to just 48 MB, which was 49% smaller than pigz.Higher compression levels didn’t produce meaningfully smaller archives At compression level 7 out of 9, pigz compressed the 818 MB CSV file down to 95 MB in 4 seconds.pigz does this by default, xz because of the -T0 option Both archiving tools saturated the CPU in our tests.We compared xz to pigz, a gzip implementation that uses multithreading for faster compression and decompression. To test this claim, we used the same 818 MB CSV file, and the same computer with six CPU cores and hyperthreading, as we used to test gzip in Linux. Previously, we stated that xz creates smaller archives than gzip. Unlike xz, tar doesn’t delete the archive file after the extraction is completeĥ.Because of the v option, tar shows which files are extracted from the archive.tar does this automatically by inspecting the file and detecting the xz compression We don’t have to tell tar to decompress with xz.We decompress the file and extract its content into the current directory.Please note that we removed the J option here because –use-compress-program already sets the compression program.ĭecompressing a tar archive with xz is also a single step and identical to gzip (except for the different file extension): tar xvf Here, we specify the minimum compression level 1: tar cvf -use-compress-program='xz -1' *.csv We use this option to set the compression level, too. Tar allows setting the compression program through the –use-compress-program option. Which xz compression level does tar pick? It depends on our version of tar, but it probably is the default compression level 6. Unlike xz and gzip, tar doesn’t delete the input files after it creates the archive.Because of the v option, tar shows which files are added to the archive.The J option enables compression with xz.We compress all files with a csv extension in the current directory into the compressed archive,. ![]()
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