ubuntu 十分钟后提醒我 ###背景

非常受用windows phone上cortana的语音指令： 十分钟分钟后叫我起床。 一小时后提醒我做XXX。

 ###思路

ubuntu下语音识别很难搞，只好搞了个命令行的东西来做几分钟后提醒我这样的事情。

几分钟后干什么，用程序实现起来很容易。golang的time.after_func就可以。 然后就是响铃，没弄明白beep命令是怎么用的，倒是又发现了espeak命令。

espeak是一个文字转语音的程序，俗称TTS。

sudo apt-get install espeak
espeak "it's time to get up"

###golang代码如下：

package main
import (
    "flag"
    "os/exec"
    "time"
)
var n_secs int
var n_mins int
var n_hours int
var words string
func init() {
    flag.IntVar(&n_secs, "s", 0, "remind me after n seonds")
    flag.IntVar(&n_mins, "m", 0, "remind me after n minutes")
    flag.IntVar(&n_hours, "h", 0, "remind me after n hours")
    flag.StringVar(&words, "w", "ling ling ling", "the words to speak when time is up")
}
func main() {
    var c = make(chan int)
    var d time.Duration = 0
    flag.Parse()
    switch {
    case n_secs != 0:
        d += time.Duration(n_secs) * time.Second
    case n_mins != 0:
        d += time.Duration(n_mins) * time.Minute
    case n_hours != 0:
        d += time.Duration(n_hours) * time.Hour
    }
    time.AfterFunc(d, func() {
        exec.Command("espeak", words).Run()
        c <- 1
    })
    <-c
}

###用法：

remindme -m 5
remindme -m 30 -w "homework homework"
remindme -h 1 -m 30 -w "clean the room, clean the room"