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.\"- .\" Copyright (c) 2007-2008 Dag-Erling Smørgrav .\" All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" $FreeBSD$ .\" .Dd December 12, 2015 .Dt UNZIP 1 .Os .Sh NAME .Nm unzip .Nd extract files from a ZIP archive .Sh SYNOPSIS .Nm .Op Fl aCcfjLlnopqtuvy .Op Fl d Ar dir .Ar zipfile .Sh DESCRIPTION .\" ... The following options are available: .Bl -tag -width Fl .It Fl a When extracting a text file, convert DOS-style line endings to Unix-style line endings. .It Fl C Match file names case-insensitively. .It Fl c Extract to stdout/screen. When extracting files from the zipfile, they are written to stdout. This is similar to .Fl p , but does not suppress normal output. .It Fl d Ar dir Extract files into the specified directory rather than the current directory. .It Fl f Update existing. Extract only files from the zipfile if a file with the same name already exists on disk and is older than the former. Otherwise, the file is silently skipped. .It Fl j Ignore directories stored in the zipfile; instead, extract all files directly into the extraction directory. .It Fl L Convert the names of the extracted files and directories to lowercase. .It Fl l List, rather than extract, the contents of the zipfile. .It Fl n No overwrite. When extracting a file from the zipfile, if a file with the same name already exists on disk, the file is silently skipped. .It Fl o Overwrite. When extracting a file from the zipfile, if a file with the same name already exists on disk, the existing file is replaced with the file from the zipfile. .It Fl p Extract to stdout. When extracting files from the zipfile, they are written to stdout. The normal output is suppressed as if .Fl q was specified. .It Fl q Quiet: print less information while extracting. .It Fl t Test: do not extract anything, but verify the checksum of every file in the archive. .It Fl u Update. When extracting a file from the zipfile, if a file with the same name already exists on disk, the existing file is replaced with the file from the zipfile if and only if the latter is newer than the former. Otherwise, the file is silently skipped. .It Fl v List verbosely, rather than extract, the contents of the zipfile. This differs from .Fl l by using the long listing. Note that most of the data is currently fake and does not reflect the content of the archive. .It Fl x Ar pattern Exclude files matching the pattern .Ar pattern . .It Fl y Print four digit years in listings instead of two. .It Fl Z Ar mode Emulate .Xr zipinfo 1L mode. Enabling .Xr zipinfo 1L mode changes the way in which additional arguments are parsed. Currently only .Xr zipinfo 1L mode 1 is supported, which lists the file names one per line. .El .Pp Note that only one of .Fl n , .Fl o , and .Fl u may be specified. If specified filename is .Qq - , then data is read from .Va stdin . .Sh ENVIRONMENT If the .Ev UNZIP_DEBUG environment variable is defined, the .Fl q command-line option has no effect, and additional debugging information will be printed to .Va stderr . .Sh COMPATIBILITY The .Nm utility aims to be sufficiently compatible with other implementations to serve as a drop-in replacement in the context of the .Xr ports 7 system. No attempt has been made to replicate functionality which is not required for that purpose. .Pp For compatibility reasons, command-line options will be recognized if they are listed not only before but also after the name of the zipfile. .Pp Normally, the .Fl a option should only affect files which are marked as text files in the zipfile's central directory. Since the .Xr archive 3 library does not provide access to that information, it is not available to the .Nm utility. Instead, the .Nm utility will assume that a file is a text file if no non-ASCII characters are present within the first block of data decompressed for that file. If non-ASCII characters appear in subsequent blocks of data, a warning will be issued. .Pp The .Nm utility is only able to process ZIP archives handled by .Xr libarchive 3 . Depending on the installed version of .Xr libarchive 3 , this may or may not include self-extracting archives. .Sh SEE ALSO .Xr libarchive 3 .Sh HISTORY The .Nm utility appeared in .Fx 8.0 . .Sh AUTHORS The .Nm utility and this manual page were written by .An Dag-Erling Sm\(/orgrav Aq Mt des@FreeBSD.org . It uses the .Xr archive 3 library developed by .An Tim Kientzle Aq Mt kientzle@FreeBSD.org .
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