shutdown:tldr:b2539

The command "shutdown -r +${5} &" is used to restart the system after a specified delay. Here's a breakdown of the command:

• "shutdown" is a command used to shut down or restart the system.
• "-r" is an option used to specify that the system should be restarted instead of shutting down.
• "+${5}" indicates the delay before the restart. The "$" symbol is used to access the value of a variable, and "5" is assumed to be a variable that holds the delay duration.
• "&" is used to run the command in the background, allowing you to continue using the terminal while the restart is scheduled.

So, when this command is executed, it will restart the system after a delay of the duration specified by the variable "5", and it will run in the background.