crystal:tldr:872ac

The command "crystal init app ${application_name}" is used to initialize a new Crystal application with a specific name.

Here's a breakdown of the different components of the command:

• "crystal" refers to the Crystal programming language interpreter or compiler. It is used to execute Crystal code or perform various tasks related to Crystal development.
• "init" is short for initialize, which means to set up or create something initially.
• "app" is a parameter specifying the type of project being initialized. In this case, it's an application project.
• "${application_name}" is a placeholder indicating that the user needs to provide the name of their application. The "${}" syntax is often used to represent placeholders or variables in the command line.

So, when you run this command, you need to replace "${application_name}" with the desired name of your application. For example, if you want to create an application called "my_app", the command would be: "crystal init app my_app".

Executing this command will create a new Crystal application with the specified name, along with some initial files and directory structure needed to start developing the application.