package main
import (
"fmt"
"time"
)
func main() {
//打印当前时间 ,格式“2006-01-02 15:04:05 Mon
//“2006-01-02 15:04:05是go的诞生时间,所以这么设计Format的Layout”
var goos = time.Now().Format("2006-01-02 15:04:05")
fmt.Printf("the current time:%s \n", goos)
fmt.Println(time.Now().Format("2006-01-02 15:04:05"))
fmt.Println(time.Now().Format("2006-01-02 15:04:05 Mon"))
}
打印一个程序执行的时间
package main
import (
"fmt"
"time"
"os"
)
func HostName(){
os.Hostname()
}
func main(){
new :=time.Now()
fmt.Println(new.Format("2006-01-02 15:04:05"))
start := time.Now().UnixNano()
HostName()
end := time.Now().UnixNano()
fmt.Printf("cost is :%d \n", ( end-start)/1000)
}