tlmgr-option:tldr:20019

The command "tlmgr option showall --json" is used to display all the available options for the TeX Live Manager (tlmgr) in a JSON format.

Here's a breakdown of the command:

• "tlmgr" is the command-line utility for managing packages in TeX Live, which is a widely used typesetting system.
• "option" is the subcommand that allows you to work with tlmgr options.
• "showall" is the argument passed to the "option" subcommand that specifies you want to display all available options.
• "--json" is an additional option that specifies the output format in JSON, a lightweight data interchange format.

When you execute this command, tlmgr will provide a JSON-formatted output containing all the available options, their default values, and brief descriptions. This format is often useful for machine-readable or automated processes that can process and parse JSON data.