Encryption and decryption are now built in to the ZIP and UNZIP EXEs. UNZIP packages contain other utilities that give detailed zipfile info, extract in a pipe, and create self-extracting archives. ZIP packages contain other utilities that add or delete comments to zipfiles and split zipfiles. Although creation of self-extracting EXEs is possible, it's not elegant it adds 30K to file size, and creates a file potentially not readable by PKZIP compatible viewers. ZIP has one compression method (deflation) and can store files without compression. Source code is also available.Īlthough ZIP still can't span a zip file across multiple floppies, it does most everything else as well as PKZIP (compression size, speed). Unlike PKZIP, it is a completely free program. Info-ZIP was developed primarily to provide cross-platform PKZIP compatibility across a variety of operating systems (DOS/Win, Unix, OS/2, Mac, VMS, Linux, Amiga, Acorn, SGI, Atari, etc.). The command line syntax varies from PKZIP/UNZIP, and additional options have been introduced. It is format compatible with PKZIP but the resemblance ends there. "Compatible" does not equate to a cheap knockoff or clone in the case of Info-ZIP. Info-ZIP (zip & unzip) PKZIP compatible file archiver. FREE SOFTWARE FOR DOS Archivers, Compressors, EXE Packers & related 1 Free Software for DOSĪrchivers, Compressors, EXE Packers, & related 1ĪRCHIVE DESCRIPTION LIST (FILES.BBS) CREATORS
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