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ZPAQ

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ZPAQ is an open source command line archiver for Windows and Linux. It uses a journaling or append-only format which can be rolled back to an earlier state to retrieve older versions of files and directories. It supports fast incremental update by adding only files whose last-modified date has changed since the previous update. It compresses using deduplication and several algorithms (LZ77, BWT, and context mixing) depending on the data type and the selected compression level. To preserve forward and backward compatibility between versions as the compression algorithm is improved, it stores the decompression algorithm in the archive. The ZPAQ source code includes a public domain API, libzpaq, which provides compression and decompression services to C++ applications. The format is believed to be unencumbered by patents.

ZPAQ - Wikipedia Jump to content From Wikipedia, the free encyclopedia Open source command line archiver for Windows and Linux This article relies excessively on references to primary sources . Please improve this article by adding secondary or tertiary sources . Find sources:   "ZPAQ"  –  news   · newspapers   · books   · scholar   · JSTOR ( October 2013 ) ( Learn how and when to remove this message ) ZPAQ Developer Matt Mahoney Stable release 7.15 [ 1 ]   / 22 September 2016 Written in C++ Operating system Microsoft Windows , Linux Platform IA-

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