Get the current process (executable) name in Go?

Question

What I am looking for here is the equivalent of C's argv[0].

The flag package only gives access to command line arguments, but not the executable name.

While one can get the process with Getpid(), I haven't found something that will give me access to the whole command line. The syscall command GetCommandLine() seems only to be available on Windows.

Answer 1

The traditional argv[0] in C is available in os.Args[0] in Go. The flags package simply processes the slice os.Args[1:]

Answer 2

A better way as follows:

filename:=filepath.Base(os.Args[0])

This will present only the application name and remove the path for you.

Answer 3

Since Go 1.8, the answer is os.Executable(). Similar to other languages, there is also os.Args[0]. One important distinction is that os.Executable() is guaranteed to return an absolute path.