UnZip

UnZip will list, test, or extract files from a ZIP archive, commonly found on DOS and Windows systems. A companion program, Zip, creates ZIP archives; both are part of the Info-ZIP project. Both programs are compatible with archives created by PKWARE's PKZIP or Nico Mak's WinZip, but in many cases the program options or default behaviors differ.

Tags Archiving Compression Software Distribution Tools Utilities
Licenses BSD Original BSD Revised
Operating Systems BeOS Mac OS X Windows MS-DOS Windows OS/2 POSIX
Implementation C

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Rss Recent releases

  • Rrelease-mid
  •  11 Mar 2005 13:02
  • Rrelease-after

Changes: This is a maintenance release that adds support for the VCEmbedded 3.0 WinCE compiler and fixes various minor bugs (none security-related).

  • Rrelease-mid
  •  23 May 2004 20:02
  • Rrelease-after

Changes: This is primarily a security-fix release, correcting a textmode data-corruption bug in 16-bit ports and several directory-traversal flaws (involving invalid filename characters, quoted characters, symlink traversal, and local/central-directory filename mismatches). It also adds support for restoring directory timestamps under Windows.

  • Rrelease-mid
  •  08 Jun 2002 13:03
  • Rrelease-after

Changes: Support for PKWARE's Deflate64 compression method, support for simple "execute command after extraction" in UnZipSFX (compile sources with CHEAP_SFX_AUTORUN defined), and a fix for a directory-traversal security hole with a new "-:" option to override.

  • Rrelease-mid
  •  21 Aug 2001 18:04
  • Rrelease-after

    Changes: This release removes unreduce.c (now available only as a separate add-on archive) and the Amiga timelib code to eliminate final distribution restrictions beyond the BSD-like Info-ZIP license. There is a generic replacement for the timelib code. Filename mapping of Unix ``dot'' files to DOS 8.3 format has been improved.

    • Rrelease-mid
    •  30 Jan 2001 06:14
    • Rrelease-after

      Changes: A switch to Info-ZIP's new, BSD-like license (under which Zip 2.3 was previously released), decryption source code, a new Novell Netware port, and a new web site (the old one still exists, but is unable to redirect to it).

      Rss Recent comments

      Rcomment-before 23 Nov 2001 18:30 Rcomment-trans roelofs Rcomment-after

      Re: the source .tgz is in a different place

      > New location: http://www.gzip.org/zlib

      That is incorrect. The zlib in-memory, deflate/inflate compression library is there (or at http://www.zlib.org/), but Zip and UnZip are separate (and older) command-line utilities for processing zipfiles. They live at http://www.info-zip.org/pub/infozip/
      (web pages) and ftp://ftp.info-zip.org/pub/infozip/ (files).

      Note that UnZip can use zlib, but this is optional.

      Rcomment-before 28 Jul 2001 21:10 Rcomment-trans dryft Rcomment-after

      the source .tgz is in a different place
      New location: http://www.gzip.org/zlib

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