How to Access the File Group ID (GID) Programmatically in Go?

Accessing File Group ID (GID) in Go

The question arises on how to programmatically retrieve a file's group ID (GID) in Go. os.Stat() provides a FileInfo object with a Sys() method that returns an Interface{} without explicit methods.

While one can output the GID using fmt.Printf(), direct programmatic access is elusive. Specifically, the GID appears within the result of Sys(), but retrieving it directly has proven challenging.

To resolve this, the reflect module reveals that the Sys() method returns a pointer to a syscall.Stat_t data type. Exploiting this, a solution to extract the GID as a string is:

<code class="go">file_info, _ := os.Stat(abspath)
file_sys := file_info.Sys()
file_gid := fmt.Sprint(file_sys.(*syscall.Stat_t).Gid)</code>

If there exists an alternative approach with improved efficiency or elegance, please share your insights in the comments.

The above is the detailed content of How to Access the File Group ID (GID) Programmatically in Go?. For more information, please follow other related articles on the PHP Chinese website!