Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/PackIt> ?p ?o }
Showing triples 1 to 68 of
68
with 100 triples per page.
- PackIt abstract "PackIt is a software data compression utility for archiving and compressing files on the Apple Macintosh platform. It was the first such program to see widespread use on the Mac, and most Mac software archives accepted uploads only in PackIt format for some time. StuffIt, introduced in the summer of 1987, offered much improved compression, and PackIt quickly disappeared.PackIt was written by Harry Chesley to support an online magazine he was writing for at the time, MacDeveloper. To distribute code and sample applications, he needed to archive a number of files into one for transmission. In the original version this was done in a simple manner, simply placing the Finder file information, data fork and resource fork, if present, in a single stream and placing the resulting "block" in the archive. No compression was used, the program was purely an archiver, similar to the Unix tar utility in concept. Like tar, the format did not include an archive header of any sort. To extract the nth file, PackIt had to read past all of the n-1 files first.PackIt II was released in early 1986 and added Huffman encoding. However the encoding was applied after the file had already been "grouped" together, meaning that the compressor had to work on the file as a whole, or not at all. Since Mac files often consisted of text in the data fork and binary data in the resource fork, compressing these separately and then joining them together would likely offer better compression overall. PackIt III, released in mid-1986, added DES encryption. According to Chesley this option was not widely used, but nevertheless PackIt III became the de facto standard compression/archiving system on the Mac through this period. In December 1986 he joined Apple Computer, and work on PackIt ended.In comparison, StuffIt supported the newer LZW-type compression system and compressed the data and resource forks separately. This led to significantly better compression ratios on almost all files. The files were then stored with a single universal header, allowing the program to quickly list the archive contents, as well as uncompress a single file, without having to "scan" through the archive. This made StuffIt much easier and faster to use in practice.Archives created with PackIt used the .pit file extension. File extensions are not normally needed on the Mac, but were commonly used on archives because they would typically be stored on some other system that would require them (PC's for instance). These files were generally stored in MacBinary format on such machines, however, making the extension somewhat superfluous. Later versions of PackIt would recognize a MacBinary header if it had been left on, and strip it off automatically.".
- PackIt genre Data_compression.
- PackIt latestReleaseVersion "PackIt III v1.3".
- PackIt license Shareware.
- PackIt wikiPageExternalLink ARCHIVES.TXT.
- PackIt wikiPageExternalLink macutils.tar.gz.
- PackIt wikiPageExternalLink Packit.
- PackIt wikiPageExternalLink unpack.c.
- PackIt wikiPageID "3750046".
- PackIt wikiPageLength "3948".
- PackIt wikiPageOutDegree "21".
- PackIt wikiPageRevisionID "518145639".
- PackIt wikiPageWikiLink Apple_Computer.
- PackIt wikiPageWikiLink Apple_Inc..
- PackIt wikiPageWikiLink Apple_Macintosh.
- PackIt wikiPageWikiLink Category:Data_compression_software.
- PackIt wikiPageWikiLink Category:Mac_OS_software.
- PackIt wikiPageWikiLink Computer_file.
- PackIt wikiPageWikiLink Data_Encryption_Standard.
- PackIt wikiPageWikiLink Data_compression.
- PackIt wikiPageWikiLink File:PackIt_III_icon.gif.
- PackIt wikiPageWikiLink File_extension.
- PackIt wikiPageWikiLink Filename_extension.
- PackIt wikiPageWikiLink Huffman_coding.
- PackIt wikiPageWikiLink Huffman_encoding.
- PackIt wikiPageWikiLink LZW.
- PackIt wikiPageWikiLink Lempel–Ziv–Welch.
- PackIt wikiPageWikiLink MacBinary.
- PackIt wikiPageWikiLink Mac_OS.
- PackIt wikiPageWikiLink Macintosh.
- PackIt wikiPageWikiLink Resource_fork.
- PackIt wikiPageWikiLink Shareware.
- PackIt wikiPageWikiLink Software.
- PackIt wikiPageWikiLink Source_code.
- PackIt wikiPageWikiLink StuffIt.
- PackIt wikiPageWikiLink Tar_(computing).
- PackIt wikiPageWikiLink Tar_(file_format).
- PackIt wikiPageWikiLink Unix.
- PackIt wikiPageWikiLinkText "PackIt".
- PackIt developer "Harry Chesley".
- PackIt genre Data_compression.
- PackIt hasPhotoCollection PackIt.
- PackIt latestReleaseDate "1986".
- PackIt latestReleaseVersion "PackIt III v1.3".
- PackIt license Shareware.
- PackIt logo File:PackIt_III_icon.gif.
- PackIt name "PackIt".
- PackIt operatingSystem Mac_OS.
- PackIt website Packit.
- PackIt wikiPageUsesTemplate Template:Infobox_Software.
- PackIt subject Category:Data_compression_software.
- PackIt subject Category:Mac_OS_software.
- PackIt hypernym Utility.
- PackIt type Software.
- PackIt type Work.
- PackIt type CreativeWork.
- PackIt type Thing.
- PackIt type Q386724.
- PackIt type Q7397.
- PackIt comment "PackIt is a software data compression utility for archiving and compressing files on the Apple Macintosh platform. It was the first such program to see widespread use on the Mac, and most Mac software archives accepted uploads only in PackIt format for some time. StuffIt, introduced in the summer of 1987, offered much improved compression, and PackIt quickly disappeared.PackIt was written by Harry Chesley to support an online magazine he was writing for at the time, MacDeveloper.".
- PackIt label "PackIt".
- PackIt sameAs m.09y_mf.
- PackIt sameAs Q7122860.
- PackIt sameAs Q7122860.
- PackIt wasDerivedFrom PackIt?oldid=518145639.
- PackIt homepage Packit.
- PackIt isPrimaryTopicOf PackIt.
- PackIt name "PackIt".