set-date:tldr:ce750

This command is from PowerShell and it sets the system date to a specific date that is computed by adding a specified number of days to the current date.

Here's an explanation of each part of the command:

• Set-Date is the cmdlet used to change the system date and time.
• -Date is a parameter that specifies the new date.
• (Get-Date) is a cmdlet that retrieves the current date and time on the system.
• .AddDays() is a method that adds a specified number of days to a given date.
• ${3} is a syntax in PowerShell that represents a variable. In this case, it suggests that the variable 3 holds the number of days to add.

So, when this command is executed, it retrieves the current date using Get-Date, adds the number of days specified by the variable 3, and then sets the system date to this new computed date using Set-Date.