file.go
package main import "flag" import "fmt" import "os" func main() { if len(os.Args) < 2 { fmt.Println("too less param") return } var ip = flag.Int("flagname", 1234, "help message for flagname") var real string flag.StringVar(&real, "dir", "this is a test","help msg for dir") flag.Parse() fmt.Println(*ip) fmt.Println(real) }
go build file.go
./file -flagname 3333 -dir ccccccccccccccc
//out put
// 3333
//ccccccccccccccc
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