家里蹲的狐狸其实有包可以实现 https://github.com/shirou/gopsutil
下面是获取硬盘信息
知识点：
格式化打印小数点
awk处理并打印最后一行
strings.Fields分割空白字符并保存被切片
package main
import (
"fmt"
"os/exec"
"strconv"
"strings"
)
func main() {
total, used := get_hhd()
fmt.Printf("total: %.2fG\nused: %.2fG\n", float64(total)/1024, float64(used)/1024)
}
func get_hhd() (int, int) {
cmd := exec.Command("bash", "-c", "df -Tlm --total -t ext4 -t ext3 -t ext2 -t reiserfs -t jfs -t ntfs -t fat32 -t btrfs -t fuseblk -t zfs -t simfs -t xfs | awk 'END {print $3,$4}'")
out, _ := cmd.Output()
r := strings.Fields(string(out))
total, _ := strconv.Atoi(r[0])
used, _ := strconv.Atoi(r[1])
return total, used
}
cat /proc/meminfo | sed -n '1p;3p;15p;16p'
输出内存信息package main
import (
"fmt"
"os/exec"
"strconv"
"strings"
)
func main() {
MemTotal, MemAvailable, SwapTotal, SwapFree := get_mem()
fmt.Printf("MemTotal: %.1fG\nMemAvailable: %.1fG\nSwapTotal: %.1fG\nSwapFree: %.1fG\n", float64(MemTotal)/1024/1024, float64(MemAvailable)/1024/1024, float64(SwapTotal)/1024/1024, float64(SwapFree)/1024/1024)
}
func get_mem() (int, int, int, int) {
cmd := exec.Command("bash", "-c", "cat /proc/meminfo | sed -n '1p;3p;15p;16p'")
out, _ := cmd.Output()
r := strings.Fields(string(out))
MemTotal, _ := strconv.Atoi(r[1])
MemAvailable, _ := strconv.Atoi(r[4])
SwapTotal, _ := strconv.Atoi(r[7])
SwapFree, _ := strconv.Atoi(r[10])
return MemTotal, MemAvailable, SwapTotal, SwapFree
}
cat <(grep 'cpu ' /proc/stat) <(sleep 1 && grep 'cpu ' /proc/stat) | awk -v RS="" '{printf "%d\n", ($13-$2+$15-$4)*100/($13-$2+$15-$4+$16-$5)}'
cpu使用率package main
import (
"fmt"
"os/exec"
)
func main() {
fmt.Println("cpu: " + get_cpu() + "% used.")
}
func get_cpu() string {
cmd := exec.Command("bash", "-c", `cat <(grep 'cpu ' /proc/stat) <(sleep 1 && grep 'cpu ' /proc/stat) | awk -v RS="" '{printf "%d", ($13-$2+$15-$4)*100/($13-$2+$15-$4+$16-$5)}'`)
out, _ := cmd.Output()
return string(out)
}
用上面的包来实现就简单了
package main
import (
"fmt"
"github.com/shirou/gopsutil/cpu"
"github.com/shirou/gopsutil/disk"
"github.com/shirou/gopsutil/mem"
"github.com/shirou/gopsutil/net"
"time"
)
func main() {
m, _ := mem.VirtualMemory()
c,_:=cpu.Percent(time.Second,false)
d,_:=disk.Usage("/")
n, _ := net.IOCounters(true)
fmt.Printf("%v: Totalsend:%.2f Totalrecv:%.2f\n", n[1].Name, toG(n[1].BytesSent), toG(n[1].BytesRecv))
// almost every return value is a struct
fmt.Printf("memory: %.2f%% used %.2fG/%.2fG\n", m.UsedPercent,toG(m.Available), toG(m.Total))
// convert to JSON. String() is also implemented
fmt.Printf("cpu: %.2f%% used\n",c[0])
fmt.Printf("disk: %.2f%% used %.2fG/%.2fG\n",d.UsedPercent,toG(d.Free),toG(d.Total))
}
func toG(i uint64) float64{
return float64(i)/1024/1024/1024
}
下次用ajax每秒刷新一下显示在网页上
已经有人写好了我们可以参考下研究下 https://github.com/ylqjgm/ServerStatus
package main
import (
"fmt"
"time"
"github.com/shirou/gopsutil/cpu"
"github.com/shirou/gopsutil/disk"
"github.com/shirou/gopsutil/mem"
"github.com/shirou/gopsutil/net"
)
func main() {
getstatus()
for {
time.Sleep(time.Second)
getNetSpeed()
}
}
func toG(i uint64) float64 {
return float64(i) / 1024 / 1024 / 1024
}
func toKB(i uint64) float64 {
return float64(i) / 1024
}
func toMB(i uint64) float64 {
return float64(i) / 1024 / 1024
}
func getNetSpeed() {
// 读取所有网卡网速
Net, _ := net.IOCounters(true)
// 定义网速保存变量
var rx, tx uint64
// 循环网络信息
for _, nv := range Net {
// 去除多余信息
if "eth0" == nv.Name {
// 加上网速信息
rx += nv.BytesRecv
tx += nv.BytesSent
}
}
// 暂停一秒
time.Sleep(time.Second)
// 重新读取网络信息
Net, _ = net.IOCounters(true)
// 网络信息保存变量
var rx2, tx2 uint64
// 循环网络信息
for _, nv := range Net {
// 去除多余信息
if "eth0" == nv.Name {
// 加上网速信息
rx2 += nv.BytesRecv
tx2 += nv.BytesSent
}
}
// 两次相见
if toKB(rx2-rx) > 1024 || toKB(tx2-tx) > 1024 {
fmt.Printf("\r下载：%.2f MB/s 上传: %.2f MB/s", toMB(rx2-rx), toMB(tx2-tx))
} else {
fmt.Printf("\r下载：%.2f KB/s 上传: %.2f KB/s", toKB(rx2-rx), toKB(tx2-tx))
}
}
func getstatus() {
m, _ := mem.VirtualMemory()
c, _ := cpu.Percent(time.Second, false)
d, _ := disk.Usage("/")
n, _ := net.IOCounters(true)
fmt.Printf("%v: Totalsend:%.2fG Totalrecv:%.2fG\n", n[1].Name, toG(n[1].BytesSent), toG(n[1].BytesRecv))
// almost every return value is a struct
fmt.Printf("memory: %.2f%% used %.2fG/%.2fG\n", m.UsedPercent, toG(m.Available), toG(m.Total))
// convert to JSON. String() is also implemented
fmt.Printf("cpu: %.2f%% used\n", c[0])
fmt.Printf("disk: %.2f%% used %.2fG/%.2fG\n", d.UsedPercent, toG(d.Free), toG(d.Total))
}
上面加了个网速实时刷新
