批处理如何实现删除多个txt文本的最后两行内容

BAT:

1. @echo off&setlocal enabledelayedexpansion

2. for %%i in (*.txt) do (

3. set "f=%%i"

4. for /f "usebackq delims=" %%j in ("!f!") do set/a n+=1

5. set/a n-=1

6. for /f "delims=" %%m in ('"type "!f!"|more& cd. 2^>!f!"') do set/a x+=1&if !x! leq !n! echo;%%m>>!f!

7. set/a n=0,x=0

8. )

9. pause

PYTHON3

1. import os

2. import sys

3.   

4. try:

5.     file_name = sys.argv[1]

6. except Exception as e:

7.     print('请拖放待处理文件到本脚本')

10. with open(file_name, 'r') as f:

11.     lines = f.readlines()

12. with open(file_name, 'w') as f:

13.     f.write(''.join(lines[2:]))