英文:
Create Hardlink with golang
问题
我想使用golang创建一个文件的硬链接。
os.Link()告诉我，不支持Windows。
因此，我尝试使用os.exec来调用"mklink.exe"。
cmd := exec.Command("mklink.exe", "/H", hardlink_path, file_path)
err := cmd.Run()
然而，它告诉我在%PATH%中找不到mklink.exe。
这让我感到困惑，因为我可以使用cmd来调用它。
接下来，我尝试通过cmd间接调用它：
cmd := exec.Command("cmd.exe", "mklink.exe", "/H", hardlink_path, file_path)
err := cmd.Run()
现在它没有返回任何错误，但也没有创建硬链接。
有什么建议吗？
英文:
I want to create a hardlink to a file using golang.
os.Link() tells me, that windows is not supported.
Therefore i tried to use os.exec, to call "mklink.exe".
cmd := exec.Command("mklink.exe", "/H", hardlink_path, file_path)
err := cmd.Run()
However, it tells me, that it can't find mklink.exe in %PATH%.
This baffels me, since i can call it using cmd.
Next i tried to call it indirectly via cmd:
cmd := exec.Command("cmd.exe", "mklink.exe", "/H", hardlink_path, file_path)
err := cmd.Run()
Now it does not return any error, however, it also doesn't create a hardlink.
Any suggestions?
答案1
得分: 15
Golang在Go 1.4中添加了对本机Windows硬链接的支持。具体来说，这个提交使得以下代码片段可以工作：
err := os.Link("original.txt", "link.txt")
请注意，并非所有的Windows文件系统都支持硬链接。目前，NTFS和UDF支持它，但FAT32、exFAT和较新的ReFS不支持。
完整的示例代码：
package main
import (
"log"
"os"
"io/ioutil"
)
func main() {
err := ioutil.WriteFile("original.txt", []byte("hello world"), 0600)
if err != nil {
log.Fatalln(err)
}
err = os.Link("original.txt", "link.txt")
if err != nil {
log.Fatalln(err)
}
}
英文:
Golang support for native Windows hard links was added in Go 1.4. Specifically, this commit makes the following snippet work:
err := os.Link("original.txt", "link.txt")
Beware that not all Windows file systems support hard links. Currently NTFS and UDF support it, but FAT32, exFAT and the newer ReFS do not.
Full example code:
package main
import (
"log"
"os"
"io/ioutil"
)
func main() {
err := ioutil.WriteFile("original.txt", []byte("hello world"), 0600)
if err != nil {
log.Fatalln(err)
}
err = os.Link("original.txt", "link.txt")
if err != nil {
log.Fatalln(err)
}
}
答案2
得分: 0
例如，
package main
import (
"fmt"
"os"
"os/exec"
)
func main() {
hardlink_path := `link.hard`
file_path := `link.go`
_, err := os.Stat(file_path)
if err != nil {
fmt.Println(err)
return
}
os.Remove(hardlink_path)
cmd := exec.Command("cmd", "/c", "mklink", "/H", hardlink_path, file_path)
out, err := cmd.CombinedOutput()
if err != nil {
fmt.Println(err)
return
}
fmt.Print(string(out))
}
输出：
创建了 link.hard 的硬链接 <<===>> link.go
英文:
For example,
package main
import (
"fmt"
"os"
"os/exec"
)
func main() {
hardlink_path := `link.hard`
file_path := `link.go`
_, err := os.Stat(file_path)
if err != nil {
fmt.Println(err)
return
}
os.Remove(hardlink_path)
cmd := exec.Command("cmd", "/c", "mklink", "/H", hardlink_path, file_path)
out, err := cmd.CombinedOutput()
if err != nil {
fmt.Println(err)
return
}
fmt.Print(string(out))
}
Output:
Hardlink created for link.hard <<===>> link.go
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