github.com/nibnait/go-learn@v0.0.0-20220227013611-dfa47ea6d2da/src/main/chapter/hello_world.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"os"
     6  )
     7  
     8  // go run hello_world.go tian bin
     9  func main() {
    10  	fmt.Println(os.Args[0])
    11  	fmt.Println(os.Args[1])
    12  	//fmt.Println(os.Args[2])
    13  
    14  	if len(os.Args) > 1 {
    15  		fmt.Println("hello world", os.Args[1])
    16  	}
    17  
    18  	fmt.Println("hello world")
    19  	os.Exit(0)
    20  }