On Wed, 22 May 2019 10:19:58 +1200, Peter Reutemann wrote:
unzip -q file.zip
warning [file.zip]: 810575875 extra bytes at beginning or within
zipfile (attempting to process anyway)
error [file.zip]: start of central directory not found;
(please check that you have transferred or created the zipfile in
the appropriate BINARY mode and that you have compiled UnZip properly)
This is the version info for my zip and unzip executables. Note the
ldo@theon:~> zip -v
Copyright (c) 1990-2008 Info-ZIP - Type 'zip "-L"' for software
This is Zip 3.0 (July 5th 2008), by Info-ZIP.
Currently maintained by E. Gordon. Please send bug reports to
the authors using the web page at www.info-zip.org
; see README for details.
Latest sources and executables are at ftp://ftp.info-zip.org/pub/infozip
as of above date; see http://www.info-zip.org/
for other sites.
Compiled with gcc 6.3.0 20170221 for Unix (Linux ELF).
Zip special compilation options:
USE_EF_UT_TIME (store Universal Time)
BZIP2_SUPPORT (bzip2 library version 1.0.6, 6-Sept-2010)
bzip2 code and library copyright (c) Julian R Seward
SYMLINK_SUPPORT (symbolic links supported)
LARGE_FILE_SUPPORT (can read and write large files on file system)
ZIP64_SUPPORT (use Zip64 to store large files in archives)
UNICODE_SUPPORT (store and read UTF-8 Unicode paths)
STORE_UNIX_UIDs_GIDs (store UID/GID sizes/values using new extra field)
UIDGID_NOT_16BIT (old Unix 16-bit UID/GID extra field not used)
[encryption, version 2.91 of 05 Jan 2007] (modified for Zip 3)
The encryption code of this program is not copyrighted and is
put in the public domain. It was originally written in Europe
and, to the best of our knowledge, can be freely distributed
in both source and object forms from any country, including
the USA under License Exception TSU of the U.S. Export
Administration Regulations (section 740.13(e)) of 6 June 2002.
Zip environment options:
ldo@theon:~> unzip -v
UnZip 6.00 of 20 April 2009, by Debian. Original by Info-ZIP.
Latest sources and executables are at ftp://ftp.info-zip.org/pub/infozip/
for other sites.
Compiled with gcc 8.2.1 20190204 for Unix (Linux ELF).
UnZip special compilation options:
COPYRIGHT_CLEAN (PKZIP 0.9x unreducing method not supported)
SYMLINKS (symbolic links supported, if RTL and file system permit)
USE_UNSHRINK (PKZIP/Zip 1.x unshrinking method supported)
USE_DEFLATE64 (PKZIP 4.x Deflate64(tm) supported)
UNICODE_SUPPORT [wide-chars, char coding: UTF-8] (handle UTF-8 paths)
LARGE_FILE_SUPPORT (large files over 2 GiB supported)
ZIP64_SUPPORT (archives using Zip64 for large files supported)
USE_BZIP2 (PKZIP 4.6+, using bzip2 lib version 1.0.6, 6-Sept-2010)
[decryption, version 2.11 of 05 Jan 2007]
UnZip and ZipInfo environment options:
Also, info about my installed “zip” and “unzip” packages:
in zip amd64 3.0-11 Archiver for .zip files
This is InfoZIP
in unzip amd64 6.0-22 De-archiver for .zip files