getPosixFilePermissions

Returns the POSIX file permissions of the file located by this path.

inline fun Path.getPosixFilePermissions(vararg options: LinkOption): Set<PosixFilePermission>(source)
import java.nio.file.*
import kotlin.io.path.*

fun main() {
    val path = Path.of("example.txt")
    val permissions: Set<PosixFilePermission> = path.getPosixFilePermissions()
    println("Permissions for $path: $permissions")
}

Source