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UnZip provides decompression for classic zip formats. Includes supports for Unicode and encryption if appropriate USE flags have been selected.


USE flags

USE flags for app-arch/unzip unzipper for pkzip-compressed files

bzip2 Enable bzip2 compression support
natspec Use dev-libs/libnatspec to correctly decode non-ascii file names archived in Windows.
unicode Add support for Unicode


root #emerge --ask app-arch/unzip


root #emerge --ask --unmerge app-arch/unzip


Environment variables

The following environment variables are available:

  • UNZIP - Sets UnZip to run with any option.
  • UNZIP_OPTS - For use in VMS systems. Does the same as UNZIP (see above).

See the UnZip man page for more environment variable information.


user $unzip -h
UnZip 6.00 of 20 April 2009, by Info-ZIP.  Maintained by C. Spieler.  Send
bug reports using http://www.info-zip.org/zip-bug.html; see README for details.

Usage: unzip [-Z] [-opts[modifiers]] file[.zip] [list] [-x xlist] [-d exdir]
  Default action is to extract files in list, except those in xlist, to exdir;
  file[.zip] may be a wildcard.  -Z => ZipInfo mode ("unzip -Z" for usage).

  -p  extract files to pipe, no messages     -l  list files (short format)
  -f  freshen existing files, create none    -t  test compressed archive data
  -u  update files, create if necessary      -z  display archive comment only
  -v  list verbosely/show version info       -T  timestamp archive to latest
  -x  exclude files that follow (in xlist)   -d  extract files into exdir
  -n  never overwrite existing files         -q  quiet mode (-qq => quieter)
  -o  overwrite files WITHOUT prompting      -a  auto-convert any text files
  -j  junk paths (do not make directories)   -aa treat ALL files as text
  -U  use escapes for all non-ASCII Unicode  -UU ignore any Unicode fields
  -C  match filenames case-insensitively     -L  make (some) names lowercase
  -X  restore UID/GID info                   -V  retain VMS version numbers
  -K  keep setuid/setgid/tacky permissions   -M  pipe through "more" pager
See "unzip -hh" or unzip.txt for more help.  Examples:
  unzip data1 -x joe   => extract all files except joe from zipfile data1.zip
  unzip -p foo | more  => send contents of foo.zip via pipe into program more
  unzip -fo foo ReadMe => quietly replace existing ReadMe if archive file newer


Extracting all the compressed file in the current directory
user $unzip temp.zip
Decompressing an archive without creating directories
user $unzip -j temp.zip
Forcefully overwrite existing files when decompressing
user $unzip -o temp.zip
Decompressing archive to another directory
user $unzip temp.zip -d /tmp
See the content of a zip file without decompressing
user $unzip -l temp.zip
Exclude certain file during the decompression
user $unzip temp.zip -x bashscript.sh -d /tmp
List detailed information about the archive
user $unzip -Z temp.zip
Converting text files when decompressing
user $unzip -a temp.zip
To test our test.zip, printing only a summary message indicating whether the archive is OK or not
user $unzip -tq temp.zip
To test all zipfiles in the current directory, printing only the summaries
user $unzip -tq '*.zip'
To extract all text source files only '.txt'
user $unzip temp.zip '*.txt'
To extract only newer versions of the files already in the current directory
user $unzip -fo temp.zip
To extract newer versions of the files already in the current directory and to create any files not already there
user $unzip -uo temp.zip
Extract a password protected zip file
user $unzip -P <password> passwordprotected.zip
Listing files only from zip archive
user $unzip -l /path/to/file.zip

See also

  • Data compression — a list of some of the file compression options available in Gentoo Linux.
  • Zip — provides classic ZIP compression.