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To build a Go application, you will need to have Go installed on your system and a Go source file that contains the code for your application.
Here’s how to build a Go application using the go build command:
$ go build main.go
This command will build an executable file for the Go program stored in the main.go file. The executable file will be located in the current directory and named main (on Unix-like systems) or main.exe (on Windows).
You can run the executable file to execute your Go application. For example:
$ ./main
On Windows, you run the executable file using the following command:
$ .\main.exe
If you want a different output name for the executable file, you can use the -o flag. For example:
$ go build -o myapp main.go
This will build an executable file named myapp (on Unix-like systems) or myapp.exe (on Windows).
Note: If your Go application depends on other packages, you may need to use the go get command to download and install these packages before you can build your application.
For example:
$ go get github.com/pkg/errors
$ go build main.go
This will download and install the errors package from GitHub and then build your Go application.