exec.Command（“date”）无法找到日期命令 [英] exec.Command("date") not able to find date command

问题描述

  package main 
 
 import（
fmt
log
os / exec
）
 
 func main（）{
 out，err：= exec.Command（date）。Output（）
 if err！= nil {
 log.Fatal（err）
} 
 fmt.Printf（日期是％s\\\
，out）
} 
  

这是执行系统命令的文档中的代码示例。 http://golang.org/pkg/os/exec/#example_Cmd_Output 即使在文档网站示例执行框不会运行，并具有相同的错误：
2009/11/10 23:00:00 exec：date：$ PATH中找不到可执行文件

在Windows上，我得到：
exec：date：在％PATH％找不到可执行文件

如何获得命令的工作？我需要设置一个路径或写出命令的完整路径吗？

解决方案

可悲的是，这个例子不会为你工作，除非你从某处（Cygwin？）得到一个 date.exe 并放入你的％PATH％。

我认为， date 是PowerShell中的内建。它适用于你，因为你的shell正在解释它。

你也许可以这样做

  out，err：= exec.Command（cmd，/ C，date）。Output（）
  

建议这里;我不知道，我没有一台Windows机器。

---

旁注：

Get-Command日期表示术语'date'未被识别为cmdlet的名称

该短语恰好有两个Google结果。其中一人导致我这，这帮助我弄清楚。

package main

import (
    "fmt"
    "log"
    "os/exec"
)

func main() {
    out, err := exec.Command("date").Output()
    if err != nil {
        log.Fatal(err)
    }
    fmt.Printf("The date is %s\n", out)
}

This is a code example from the documentation for executing system commands. http://golang.org/pkg/os/exec/#example_Cmd_Output Even on the documentation site the example execute box doesn't run and has the same error: 2009/11/10 23:00:00 exec: "date": executable file not found in $PATH

On Windows I get: exec: "date": executable file not found in %PATH%

How do I get commands to work? Do I need to set a path or write out the full path of the command?

解决方案

Sadly, that example isn't going to work for you unless you get a date.exe from somewhere (Cygwin?) and put in on your %PATH%.

What's going on, I believe, is that date is a builtin in Powershell. It works for you because your shell is interpreting it.

You may be able to do

out, err := exec.Command("cmd", "/C", "date").Output()

as suggested here; I don't know, I don't have a Windows machine handy.

---

Sidenote:

Get-Command date says "The term 'date' is not recognized as the name of a cmdlet"

There are exactly two Google results for that phrase. One of them leads me to this, which helped me figure this out.

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