Go 中启动其他程序并获取其输出

Go还是挺可爱的，蛮喜欢~语法以及内建函数库都不错。

 

// exec
package main

import (
    "fmt"
    "os/exec"
)

func main() {
    cmd := exec.Command("cmd.exe", "/c", "tasklist")
    var buf []uint8
    var err error

    err = nil
    if nil == err {
        buf, err = cmd.Output()
        if err != nil {
            fmt.Printf("%t", err)
            return
        }
    } else {
        fmt.Printf("fatal error:%t", err)
        return
    }

    var c uint8
    line := []uint8{}
    jump := false
    for i := 0; i < len(buf); i += 1 {
        c = buf[i]
        if jump == true {
            if c == uint8('\n') {
                jump = false
            }
            continue
        }
        if c > 0x7f {
            jump = true
            line = []uint8{}
            fmt.Println("One line skipped.")
            continue
        }
        if c == uint8('\n') {
            fmt.Printf("%s\n", line)
            line = []uint8{}
            continue
        }
        line = append(line, c)
    }

}