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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                ` `大部分Go程序都是沒有UI的,運行在純命令行的模式下,該干什么全靠運行參數。 這里介紹下Go語言命令行程序和他們的參數。 ` `這里只介紹flag包,這個包強大。直接給個實例: ``` //type=go //title=golang設計命令行工具模板 package main import ( "fmt" "time" "flag" ) //定義變量 var ( t = flag.Bool("t",false,"顯示時間") v = flag.Bool("v",false,"當前版本") s = flag.String("s","","顯示輸入的字符串") ) // func main() { flag.Parse() //flag使用前,必須首先解析: //fmt.Println(s) //顯示時間 if *t { ctime := time.Now() fmt.Println(ctime) } //顯示當前軟件版本 if *v { print("Version:1.0.0") } //顯示輸入的字符串 if *s != "" { fmt.Println(*s) } } ``` 使用截圖: ![](https://img.kancloud.cn/c6/0a/c60a3bad6e4642c258c1f7c5d15adf54_353x165.png) ![](https://img.kancloud.cn/1a/6e/1a6ee9671577256ecf161a87d45b462c_357x126.png) ![](https://img.kancloud.cn/41/4b/414bc6668f64a16463873b4c747cc689_346x180.png)
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