unpack200(1) Java Deployment Tools unpack200(1)

# [NAME](#NAME)

unpack200 - Transforms a packed file produced by [pack200(1)](/man/enterprise-packages/corretto-8/pack200.1) into a JAR file for web deployment.

# [SYNOPSIS](#SYNOPSIS)

```
unpack200 [ options ] input-file JAR-file
```

[*options*](#options)

The command-line options. See Options.

[*input-file*](#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)](/man/enterprise-packages/corretto-8/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*](#JAR_file)

Name of the output JAR file.

# [DESCRIPTION](#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](#OPTIONS)

[-Hvalue --deflate-hint=*value*](#Hvalue)

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](#r)

Removes the input pack file.

[-v --verbose](#v)

Displays minimal messages. Multiple specifications of this option displays more verbose messages.

[-q --quiet](#q)

Specifies quiet operation with no messages.

[-lfilename --log-file=*filename*](#lfilename)

Specifies a log file where output messages are logged.

-? -h --help

Prints help information about the **unpack200** command.

[-V --version](#V)

Prints version information about the **unpack200** command.

[-J*option*](#J)

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)](/man/enterprise-packages/corretto-8/java.1).

# [NOTES](#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](#EXIT)

The following exit values are returned: 0 for successful completion, and a value that is greater than 0 when an error occurred.

# [SEE ALSO](#SEE)

•

[pack200(1)](/man/enterprise-packages/corretto-8/pack200.1)

•

[jar(1)](/man/enterprise-packages/corretto-8/jar.1)

•

[jarsigner(1)](/man/enterprise-packages/corretto-8/jarsigner.1)

•

Pack200 and Compression at http://docs.oracle.com/javase/8/docs/technotes/guides/deployment/deployment-guide/pack200.html

•

The Java SE Technical Documentation page at http://docs.oracle.com/javase/

21 November 2013 JDK 8

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Document: unpack200(1) from corretto-8 8.504.04.1-r0 (Chainguard OS)
Source: https://github.com/corretto/corretto-8