go:tldr:a7f28
The command "go build -o ${executable} ${file}.go" is used to build an executable file from a Go source code file.
Here is the breakdown:
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"go build" is a command in the Go programming language that compiles and builds Go source code files into executable files.
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"-o" flag is used to specify the output file name or path for the resulting executable. The "${executable}" is a placeholder that should be replaced with the desired name for the output file.
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"${file}.go" is another placeholder that should be replaced with the name of the Go source code file you want to build. The ".go" extension is added to indicate that it's a Go source file.
So when you execute this command, the Go compiler will compile the specified file and create an executable file with the name provided in the "-o" flag.