go:tldr:d3219

The command "go run ${file}.go" is used in Go programming language to execute a Go program located in the current directory.

Here's what each part of the command means:

• "go run" is the command used to compile and run a Go program in a single step.
• "${file}.go" is a placeholder that represents the name of the Go source file you want to run. The "${file}" part is typically used in integrated development environments (IDEs) to dynamically insert the filename at the time of running the command.

To use this command, you need to replace "${file}" with the actual name of your Go source file (without the .go extension). For example, if your file name is "myprogram.go", the command will be written as "go run myprogram.go".

When you execute this command, the Go compiler (go) will compile the specified Go source file and generate an executable in memory. Then, it will immediately execute the program, printing any output or errors to the terminal.