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prismlauncher(6) Games Manual prismlauncher(6)

NAME

prismlauncher - a launcher and instance manager for Minecraft.

SYNOPSIS

prismlauncher [OPTIONS...]

DESCRIPTION

Prism Launcher is a custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once. It also allows you to easily install and remove mods by simply dragging and dropping. Here are the current features of Prism Launcher.

OPTIONS

-d, --dir=DIRECTORY

Use DIRECTORY as the Prism Launcher root.

-l, --launch=INSTANCE_ID

Launch the instance specified by INSTANCE_ID.

--show=INSTANCE_ID

Show the configuration window of the instance specified by INSTANCE_ID.

--alive

Write a small 'live.check' file after Prism Launcher starts.

-h, --help

Display help text and exit.

-v, --version

Display program version and exit.

-a, --profile=PROFILE

Use the account specified by PROFILE (only valid in combination with --launch).

ENVIRONMENT

The behavior of the launcher can be customized by the following environment variables, besides other common Qt variables:

QT_LOGGING_RULES

Specifies which logging categories are shown in the logs. One can enable/disable multiple categories by separating them with a semicolon (;).

The specific syntax, and alternatives to this setting, can be found at https://doc.qt.io/qt-6/qloggingcategory.html#configuring-categories.

QT_MESSAGE_PATTERN

Specifies the format in which the console output will be shown.

Available options, as well as syntax, can be viewed at https://doc.qt.io/qt-6/qtglobal.html#qSetMessagePattern.

EXIT STATUS

0

Success

1

Failure (syntax or usage error; configuration error; unexpected error).

BUGS

https://github.com/PrismLauncher/PrismLauncher/issues

RESOURCES

GitHub: https://github.com/PrismLauncher/PrismLauncher

Main website: https://prismlauncher.org

AUTHORS

Prism Launcher Contributors

2026-04-01