Extract files from a zip archive
unzip [-Z] [-opts[modifiers]] file[.zip] [list]
[-x xlist] [-d exdir]
QNX Neutrino, Microsoft Windows
The options include:
- -d exdir
- Extract files into exdir.
- Freshen the existing files.
- (“el”) List archive files (short format).
- -P password
- Use the given password to unencrypt the archive entries.
|| Specifying a plain-text password on the command line or in a script
can be a security problem.
- Extract files to pipe (stdout).
- Update the timestamp for the archive to match the latest timestamp of
the archive files.
- Test the archive files.
- Update existing files and create new ones if needed.
- Be verbose or print diagnostic version information.
- -x xlist
- Exclude the files in the xlist.
- ZipInfo mode. If the first option on the command line is -Z,
the remaining options are taken as ZipInfo options.
- Display the archive comment only.
The modifiers include:
- Automatically convert any text files.
- Extract all files as text files.
- Match files case-insensitively.
- Junk the path to the file; do not make directories.
- Keep setuid/setgid/tacky permissions.
- Convert some names to lowercase.
- Pipe all output through an internal pager that's similar to the more
- Never overwrite existing files.
- Overwrite existing files without prompting.
- Perform operations quietly. Use -qq to make them quieter.
- Use escapes for all non-ASCII Unicode.
- Ignore any Unicode fields.
- Retain VMS file version numbers.
- Restore user and group (UID/GID) information.
The unzip utility lists, tests, or extracts files from a ZIP archive.
The default behavior (with no options) is to extract into the current
directory (and subdirectories below it) all files from the specified ZIP archive.
A companion program, zip, creates ZIP archives; both programs are compatible with
archives created by PKZIP and PKUNZIP.
Extract all members of the archive letters.zip
into the current directory and subdirectories below it,
creating any subdirectories as necessary, using unzip:
Extract all members of letters.zip into
the current directory only:
unzip -j letters
Test letters.zip. Use the following
command to print only a summary message indicating whether the archive
is all right or not:
unzip -tq letters
Test all zipfiles in the current directory, and print only
unzip -tq \*.zip
Extract all members of letters.zip whose names end in
.tex, to standard output, auto-convert to the local
end-of-line convention, and pipe the output into more:
unzip -ca letters \*.tex | more
Extract the binary file paper1.dvi to standard output,
and pipe it to a printing program:
unzip -p articles paper1.dvi | dvips
Extract newer versions of the files already in the current directory
and create any files not already there:
unzip -uo sources
Display a diagnostic screen showing which unzip
and zipinfo options are stored in environment variables:
See whether decryption support was compiled with the files:
See the compiler that unzip used:
- A set of default
options for unzip. For example:
- The operation succeeded.
- A generic error in the zipfile format was detected, but processing may have completed
successfully anyway; a warning was generated in the process.
- A severe error in the zipfile format was detected; processing
probably failed immediately.
- unzip was unable to allocate memory for one or
more buffers during program initialization.
- unzip was unable to allocate memory or unable to obtain a tty to
read the decryption password(s).
- unzip was unable to allocate memory during decompression to disk.
- The specified zipfiles were not found.
- Invalid options were specified on the command line.
- No matching files were found.
- The disk is, or was, full during extraction.
- The end of the ZIP archive was encountered prematurely.
- The user aborted unzip prematurely with Ctrl-C or a similar command.
- Testing or extraction of one or more files failed, due to unsupported
compression methods or unsupported decryption.
- No files were found, due to bad decryption password(s).
If even one file is successfully processed, however, the exit status is 1.
Backing Up and Recovering Data
in the Neutrino User's Guide