test: disk used

tools/disk/main/main.go

@@ -8,8 +8,8 @@ import (
 )
 
 func GetDirectoryDiskUsed(directories []string) (uint64, error) {
-	fmt.Println(strings.Join(directories, " "))
-	cmd := exec.Command("du", "-s", strings.Join(directories, " "))
+	cmd := exec.Command("du", "-s")
+	cmd.Args = append(cmd.Args, directories...)
 	output, err := cmd.CombinedOutput()
 	if err != nil {
 		fmt.Println(err)