Is used for Split Multi-volume RAR compressed file archive (part 2). Is used for Split Multi-volume RAR compressed file archive (part 2). Rar for mac free. ![]() Uncompress gz and Z files FTP site Search for How to uncompress *.gz and *.Z files Files available from the NCBI anonymous FTP site have been compressed using the 'gzip' program (and have the extension *.gz), or the UNIX 'compress' program (and have the extension *.Z). This document describes how both file types can be uncompressed. • • • • • • Uncompress *.gz files As announced via the GenBank newsgroup on June 15, 2000, NCBI now uses the gzip compression utility instead of the Unix 'compress' utility for all GenBank files, starting with GenBank Release 119.0. Like the previously mentioned archive files, TAR.GZ files belong to the open standard and is most commonly used on Unix systems. The gzip compression is based on the DEFLATE algorithm, which results in lower compression rates in comparison. However, the compression speed is the highest compared to common archive formats. NTFS: I've had all kinds of problems with NTFS-3G, going back and forth between Windows, Mac, and Linux. File corruption, lost data, etc. This was a few years ago, maybe it's better now - but it was 'sold' as solid then and it wasn't. Comparisons 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. Given that ESTs and GSS sequences comprise a huge portion of the GenBank data NCBI distributes, switching to gzip saves a great deal of disk space, and reduces the amount of bandwidth utilized by those who ftp GenBank files. As a result of the switch to gzip, file naming conventions have changed. The suffix of compressed GenBank data files was previously '.Z'. After the switch, the suffix became '.gz'. The gzip utility is used to compress various other data on the ftp site as well. If you are unsure about the availability of gzip for your platform, please contact your system administrator. If you find that the utility is not installed, one possible place for obtaining gzip is: Uncompress *.Z files Files with a *.Z extension have been compressed by the UNIX 'compress' program. Those files can be handled with the 'uncompress' program, or programs such as the and utilities described below. UNIX If you are using a UNIX workstation, use the uncompress program to expand the files to their original state. PC If you are using a PC, you will need two programs (pkunzip & comp430d.zip) in order to uncompress a *.Z file. If you do not already have the pkunzip program on your PC, please contact your systems administrator to obtain it, or search the Net to find a Web site from which you can download that program. The 'comp430d.zip' freeware program is available from the 'pub/dab' directory the NCBI anonymous FTP site (). It allows you to decompresses Unix '.Z' files under DOS. Once you download the 'comp430d.zip' file, follow these steps: • Run the 'pkunzip' program to unzip 'comp430d.zip.'
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