pm2:tldr:c1eab

The command pm2 start ${app-js} --name ${application_name} is used to start an application using PM2 (Process Manager 2) with a specific name.

Let's break down each part of the command:

• pm2 is the command to manage and monitor applications running on a Node.js server.
• start is the action/command to start an application.
• ${app-js} represents the name of the JavaScript file that contains the code for your application. It is enclosed in ${} which indicates it is a variable or placeholder that needs to be replaced with the actual name of the file.
• --name is an optional argument that specifies the name you want to give to your application.
• ${application_name} represents the name you want to assign to your application. As with ${app-js}, it is also a placeholder that needs to be replaced with the actual name when executing the command.

For example, if you have a JavaScript file named myapp.js and you want to start it with the name MyApp, you would replace ${app-js} with myapp.js and ${application_name} with MyApp. The command would then look like: pm2 start myapp.js --name MyApp.

By using PM2 to manage and monitor your application, you can easily start, stop, restart, and monitor its status, among other functionalities.