unpack200(1) Java Deployment Tools unpack200(1)
NAME
unpack200 - Transforms a packed file produced by pack200(1) into a JAR file for web
deployment.
SYNOPSIS
unpack200 [ options ] input-file JAR-file
options
The command-line options. See Options.
input-file
Name of the input file, which can be a pack200 gzip file or a pack200 file. The
input can also be JAR file produced by pack200(1) with an effort of 0, in which
case the contents of the input file are copied to the output JAR file with the
Pack200 marker.
JAR-file
Name of the output JAR file.
DESCRIPTION
The unpack200 command is a native implementation that transforms a packed file produced by
pack200(1) into a JAR file. A typical usage follows. In the following example, the
myarchive.jar file is produced from myarchive.pack.gz with the default unpack200 command
settings.
unpack200 myarchive.pack.gz myarchive.jar
OPTIONS
-Hvalue --deflate-hint=value
Sets the deflation to be true, false, or keep on all entries within a JAR file. The
default mode is keep. If the value is true or false, then the --deflate=hint option
overrides the default behavior and sets the deflation mode on all entries within
the output JAR file.
-r --remove-pack-file
Removes the input pack file.
-v --verbose
Displays minimal messages. Multiple specifications of this option displays more
verbose messages.
-q --quiet
Specifies quiet operation with no messages.
-lfilename --log-file=filename
Specifies a log file where output messages are logged.
-? -h --help
Prints help information about the unpack200 command.
-V --version
Prints version information about the unpack200 command.
-Joption
Passes option to the Java Virtual Machine, where option is one of the options
described on the reference page for the Java application launcher. For example, -J-
Xms48m sets the startup memory to 48 MB. See java(1).
NOTES
This command should not be confused with the unpack command. They are distinctly separate
products.
The Java SE API Specification provided with the JDK is the superseding authority in case
of discrepancies.
EXIT STATUS
The following exit values are returned: 0 for successful completion, and a value that is
greater than 0 when an error occurred.
SEE ALSO
o pack200(1)
o jar(1)
o jarsigner(1)
o Pack200 and Compression at
http://docs.oracle.com/javase/8/docs/technotes/guides/deployment/deployment-
guide/pack200.html
o The Java SE Technical Documentation page at http://docs.oracle.com/javase/
JDK 8 21 November 2013 unpack200(1)
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