import "github.com/shirou/gopsutil/cpu"

// cpu info
func getCpuInfo() {
 cpuInfos, err := cpu.Info()
 if err != nil {
 fmt.Printf("get cpu info failed, err:%v", err)
 }
 for _, ci := range cpuInfos {
 fmt.Println(ci)
 }
 // CPU使用率
 for {
 percent, _ := cpu.Percent(time.Second, false)
 fmt.Printf("cpu percent:%v\n", percent)
 }
}

import "github.com/shirou/gopsutil/load"

func getCpuLoad() {
 info, _ := load.Avg()
 fmt.Printf("%v\n", info)
}

import "github.com/shirou/gopsutil/mem"

// mem info
func getMemInfo() {
 memInfo, _ := mem.VirtualMemory()
 fmt.Printf("mem info:%v\n", memInfo)
}

import "github.com/shirou/gopsutil/host"

// host info
func getHostInfo() {
 hInfo, _ := host.Info()
 fmt.Printf("host info:%v uptime:%v boottime:%v\n", hInfo, hInfo.Uptime, hInfo.BootTime)
}

import "github.com/shirou/gopsutil/disk"

// disk info
func getDiskInfo() {
 parts, err := disk.Partitions(true)
 if err != nil {
 fmt.Printf("get Partitions failed, err:%v\n", err)
 return
 }
 for _, part := range parts {
 fmt.Printf("part:%v\n", part.String())
 diskInfo, _ := disk.Usage(part.Mountpoint)
 fmt.Printf("disk info:used:%v free:%v\n", diskInfo.UsedPercent, diskInfo.Free)
 }

 ioStat, _ := disk.IOCounters()
 for k, v := range ioStat {
 fmt.Printf("%v:%v\n", k, v)
 }
}

import "github.com/shirou/gopsutil/net"

func getNetInfo() {
 info, _ := net.IOCounters(true)
 for index, v := range info {
 fmt.Printf("%v:%v send:%v recv:%v\n", index, v, v.BytesSent, v.BytesRecv)
 }
}

func GetLocalIP() (ip string, err error) {
 addrs, err := net.InterfaceAddrs()
 if err != nil {
 return
 }
 for _, addr := range addrs {
 ipAddr, ok := addr.(*net.IPNet)
 if !ok {
 continue
 }
 if ipAddr.IP.IsLoopback() {
 continue
 }
 if !ipAddr.IP.IsGlobalUnicast() {
 continue
 }
 return ipAddr.IP.String(), nil
 }
 return
}

// Get preferred outbound ip of this machine
func GetOutboundIP() string {
 conn, err := net.Dial("udp", "8.8.8.8:80")
 if err != nil {
 log.Fatal(err)
 }
 defer conn.Close()

 localAddr := conn.LocalAddr().(*net.UDPAddr)
 fmt.Println(localAddr.String())
 return localAddr.IP.String()
}

import runtime
fmt.Println(runtime.GOOS)
fmt.Println(runtime.GOARCH)

Win7 64bit系统：
windows
amd64

macOS(10.13.4) 64bit系统：
darwin
amd64

name, err := os.Hostname()
if err == nil {
  fmt.Println(name)
}