Do I need to use os.Exit(0) when succefully terminanting an application in Go?-CodePudding

I`ve recently discovered the os.Exit function on Go standard library, and I`ve seen it in some tutorials as well.

Since the Go`s func main() does not return any value, does it matter if I simply use return in the main() function isteand of os.Exit(0)?

I know os.Exit also ignores defers in Go code, but in this case I just want to know if there`s no difference for the OS between return and os.Exit(0).

CodePudding user response：

the difference you described is correct, os.Exit(0) finishes the program immediately, ignoring any defers. With return your program will finish with default code 0.

test-exit$ cat main.go
> package main
> 
> func main() {
>   return
> }
test-exit$ go run main.go
test-exit$ echo $? // shows status code of last executed command
> 0

So outside the defer case there is basically no difference.