---
name: "unpack200-openjdk11"
section: "1"
platform: "linux"
package: "jdk11-openjdk"
version: "11.0.32.1.u1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/unpack200-openjdk11"
---

# unpack200-openjdk11(1)

Transforms a packed file produced by pack200(1) into a JAR file for web deployment.

## 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.

- \-J*option*

  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

- •

  pack200(1)

- •

  jar(1)

- •

  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/