ruby:tldr:7242c

This command is meant to run a Ruby script file. Here's a breakdown of each component in the command:

• ruby is the command used to execute Ruby code.
• ${script-rb} is a placeholder for the actual filename of a Ruby script file, where script.rb is an example filename. The ${script-rb} portion specifies that the value should be substituted with the actual filename before running the command.

To use this command, you need to replace ${script-rb} with the name of the Ruby script file you want to run. For example, if you have a file named my_script.rb, you would use the following command: ruby my_script.rb.