Text 批处理，读取n'中的文本文件；至m'的第th行；第一线

我不熟悉批处理命令

我在不同的文件夹中有五个文本文件。比如说,

c:\case1\case1.txt
c:\case2\case2.txt
c:\case3\case3.txt

所以我想把这些文本文件从第n行读到第m行 并将这些值写入同一文本文件中。如何制作批处理文件

例如，我想要的结果文本文件是

案例1

---

10456如果你能下载东西，你可以从第2行一直使用到第4行
范例

10456          <--- this valus is in n'th line in case1.txt    
3456           <--- this valus is in n+1'th line in case1.txt    
23455          <--- this valus is in n+2'th = m'th line in case1.txt

49566          <--- this valus is in n'th line in case2.txt
85494          <--- this valus is in n+1'th line in case2.txt
38566          <--- this valus is in n+2'th = m'th line in case2.txt

49658          <--- this valus is in n'th line in case3.txt    
48569          <--- this valus is in n+1'th line in case3.txt    
39245          <--- this valus is in n+2'th = m'th line in case3.txt 

sed -n "2,4p" file