用Go語言寫了一個電腦搜索文件的小程序

    package main


import (  
    "bytes"  
    "fmt"  
    "os"  
    "os/exec"  
    "path/filepath"  
    "sync"  
)  

type jieguo struct {  
    go_num int  
    Lock   sync.Mutex  
}  

var searchName string = os.Args[1]  
var search_result chan string = make(chan string, 1)  
var nums chan int = make(chan int, 1)  
var x jieguo = jieguo{go_num: 0}  

func main() {  
    list := []string{"D:","E:","F"}  
    for _, i := range list {  
        fmt.Println(i, searchName)  
        go pan(i)  
    }  
    for {  
        select {  
        case x := <-search_result:  
            fmt.Println(x)  
        case y := <-nums:  
            if y == 0 {  
                os.Exit(0)  
            }  
        }  
    }  
}  

func pan(path string) {  
    a := exec.Command("ls", path)  
    result, e := a.Output()  
    if e != nil {  
        fmt.Println(e)  
    }  
    z := bytes.Split(result, []byte{10})  
    for _, i := range z[:len(z)-1] {  
        s := path + "\\" + string(i)  
        fmt.Println(s)  
        e = os.Chdir(s)  
        if e == nil {  
            x.Lock.Lock()  
            x.go_num = x.go_num + 1  
            x.Lock.Unlock()  
            go func() {  
                filepath.Walk(s, walk)  
                x.Lock.Lock()  
                x.go_num = x.go_num - 1  
                nums <- x.go_num  
                x.Lock.Unlock()  
            }()  
        } else {  
            fmt.Println(e)  
            if string(i) == searchName {  
                fmt.Println(s)  
            }  
        }  
    }  
}  

func walk(path string, info os.FileInfo, err error) error {  
    if err != nil {  
        return err  
    }  
    if !info.IsDir() && info.Name() == searchName {  
        search_result <- path  
        return nil  
    }  
    return nil  
}  </pre> 來自：http://blog.csdn.net/fyxichen/article/details/46327673