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tlmgr-gui:tldr:fb949
This command is invoking the "tlmgr gui" command with the option "-background" and a specific color value.
Here's a breakdown of each component:
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"sudo": This is a command used in Unix-like systems (including Linux) to execute a command with elevated privileges. By prefixing a command with "sudo", you are requesting to run that command as a superuser or administrator.
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"tlmgr": This is a command-line tool for managing TeX Live, a widely-used distribution of the TeX/LaTeX typesetting system. It can be used to install, update, and remove various TeX packages.
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"gui": This option tells the "tlmgr" command to launch a graphical user interface (GUI) for managing TeX Live. By using this option, you can perform package installations, updates, and removals through a visual interface rather than the command line.
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"-background": This option specifies the background color to be used in the GUI interface. In this case, the color value is given as "${#f39bc3}". The "${...}" syntax suggests that the value is likely being substituted with a specific color value or variable. The color value #f39bc3 represents a shade of pink.
Overall, this command is used to start the graphical interface for TeX Live Manager (tlmgr) with a pink background color.