tlmgr

tlmgr is a command-line tool used in TeX Live, a popular distribution of the TeX typesetting system. It stands for "TeX Live Manager" and serves as a package manager for TeX Live. With tlmgr, users can install, update, and remove packages easily without the need for a graphical interface. It provides a command-line interface for managing all aspects of TeX Live, such as packages, fonts, and documentation.

Users can use tlmgr to perform various operations on packages like installing new packages, updating existing ones, or removing packages from the TeX Live installation. It also supports additional functionalities like listing available packages, searching for specific packages, or checking for updates.

tlmgr uses the TeX Catalogue, a comprehensive online resource, to provide metadata about packages, their dependencies, and other relevant information. It connects to the internet to download and install packages directly from the official TeX Live repositories.

The tool also supports multiple installation modes, such as a global installation for all users or a local installation restricted to the current user. Users can choose the appropriate mode based on their requirements and system privileges.

tlmgr provides extensive documentation and usage information through its built-in help system. Users can access detailed documentation and examples to understand and utilize the various features of tlmgr effectively.

Overall, tlmgr is a powerful and essential command-line tool for managing packages in TeX Live, allowing users to easily install, update, and remove packages to enhance their TeX typesetting workflow.