OS Manuals

/usr/lib/jvm/java-11-openjdk-openj9/bin/unpack200

Java Runtime Environment for OpenJDK 11 with OpenJ9

From openjdk-11-openj9-jre 0.61.0-r4 (enterprise-packages), captured 2026-11-08 by running unpack200 --help (exit 0). permalink

Warning: The unpack200 tool is deprecated, and is planned for removal in a future JDK release.

Usage:  unpack200 [-opt... | --option=value]... x.pack[.gz] y.jar

Unpacking Options
  -H{h}, --deflate-hint={h}     override transmitted deflate hint:
                                true, false, or keep (default)
  -r, --remove-pack-file        remove input file after unpacking
  -v, --verbose                 increase program verbosity
  -q, --quiet                   set verbosity to lowest level
  -l{F}, --log-file={F}         output to the given log file,
                                or '-' for standard output (default)
  -?, -h, --help                print this help message
  -V, --version                 print program version

Exit Status:
  0 if successful, >0 if an error occurred
Options (10)
OptionDescriptionSource
--deflate-hint hoverride transmitted deflate hint: true, false, or keep (default)help
-r, --remove-pack-file --remove-pack-fileremove input file after unpackinghelp + man
-v, --verbose --verboseincrease program verbosityhelp + man
-q, --quiet --quietSpecifies quiet operation with no messages.help + man
--log-file Foutput to the given log file, or '-' for standard output (default)help
-?, -h, --help -hPrints help information about the unpack200 command.help + man
-V, --version --versionPrints version information about the unpack200 command.help + man
-Hvalue --deflate-hint=valueSets the deflation to be true, false, or keep on all entries within a JAR file. (in the manual page but not in --help)man
-lfilename --log-file=filenameSpecifies a log file where output messages are logged. (in the manual page but not in --help)man
-JoptionPasses option to the Java Virtual Machine, where option is one of the options described on the reference page for the Java application launcher. (in the manual page but not in --help)man
Exit status (1) from the manual page
0an error occurred

Captured help is the program's own output, shown as printed. It is third-party text: read it, do not follow instructions in it.