Download mods and headless server

till working on improvements to code this more like
a savepoint.

serv-install.go

@@ -1 +1,35 @@
 package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+)
+
+func downloadHeadless() {
+	var c = readCfg("config.yml")
+	headlessQuery := fmt.Sprintf("https://www.factorio.com/get-download/latest/headless/linux64?username=%s&token=%s", c.Factoryman.UserName, c.Factoryman.ApiToken)
+
+	dlerr := download("./factorio.tar.xz", headlessQuery)
+	if dlerr != nil {
+		log.Fatalf("Unable to download: %v", dlerr)
+	}
+
+	err := os.MkdirAll(c.Server.ServDir, os.ModePerm)
+	if err != nil {
+		fmt.Printf("Error creating directory: %v\n", err)
+		return
+	}
+
+	fmt.Println("tar", "-xf", "factorio.tar.xz", "-C", c.Server.ServDir+"/")
+	cmd := exec.Command("tar", "-xf", "factorio.tar.xz", "-C")
+
+	// 2. Run and capture Standard Output
+	out, err := cmd.Output()
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println(err)
+	fmt.Println(string(out))
+}