![]() ![]() One example web site that provides information about various Mac compression/uncompression programs is: Have been prepared with the Unix compress program. ![]() That have a program such as "MacCompress," which handles files that If you are using a Mac, you can search the Web to find sites Or, you can leave off the ".exe" portion and simply type the command: Copy the "compress.exe" to "uncomp.exe" using the following command:.Rename the "comp430d.exe" file to "compress.exe" with the.Run the "pkunzip" program to unzip "comp430d.zip.".Once you download the "comp430d.zip" file, follow these steps: It allows you to decompresses Unix ".Z" files under DOS. ![]() The "pub/dab" directory the NCBI anonymous FTP site The "comp430d.zip" freeware program is available from Or search the Net to find a Web site from which you can Please contact your systems administrator to obtain it, If you do not already have the pkunzip program on your PC, (pkunzip & comp430d.zip) in order to uncompress a *.Z file. If you are using a PC, you will need two programs If you are using a UNIX workstation, use the uncompress program to expand the files to their original state. Those files can be handled with the Unix "uncompress" program, or programs such as the PC and Mac utilities described below. Installed, one possible place for obtaining gzip is: įiles with a *.Z extension have been compressed by the UNIX "compress" program. If you are unsure about the availability of gzip for your platform, pleaseĬontact your system administrator. The gzip utility is used to compress various other data on the ftp site as well. The suffix of compressed GenBank data files was previously ".Z". Of disk space, and reduces the amount of bandwidth utilized by those whoĪs a result of the switch to gzip, file naming conventions have changed. GenBank data NCBI distributes, switching to gzip saves a great deal Given that ESTs and GSS sequences comprise a huge portion of the GenBank files, starting with GenBank Release 119.0.Ĭomparisons of gzip to compress for simplistic sequence data (e.g., EST, GSS, STS) yielded an additional 50% reduction in the size of a compressed file. Gzip compression utility instead of the Unix "compress" utility for all This document describes how both file types can be uncompressed.Īs announced via the GenBank newsgroup on June 15, 2000, NCBI now uses the The "gzip" program (and have the extension *.gz), or the UNIX "compress" program (and have the extension *.Z). The human genome, whole genomes and related resourcesįiles available from the NCBI anonymous FTP site have been compressed using ![]() An introduction for researchers, educators and the public. It even works as a filter.ħz doesn't create archives with full filesystem information on UNIX, so you'd need to use tar before using 7z (but since 7z stores other information about the tar file, I'd recommend using xz, as it is designed for it): tar cf - file1 file2 dir | 7za z -si science behind our resources. Xz is a UNIX tool, that uses LZMA2 for compression, but works the way gz, bz2, etc works. If you want to use the same compression algorithm with your tarballs, use the -J switch with tar: tar cJf file1 file2 dir I recommend this method in case Windows users can't open 7z archives (in case you want to advice a tool for that: PeaZip). It can also create self-extracting archives with the -sfx switch: 7za a -sfx archive.exe files1 file2 dir Usually in the package p7zip, you'll get the 7z and 7za command, with which you can create your own 7z archives.ħza can also decompress standard ( pkzip) zip archives (and create them as well with the -tzip switch).Ĭompressing: 7za a archive.7z file1 file2 directory/ Well, when it comes to distributing files for a variety of operating systems, I'd recommend 7-zip. ![]()
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