Question

我想从顶部和底部修剪文本文件。假设文本文件包含90行。我想删除前x行和下y行并更新文件。（即只留下范围x + 1到y-1。因此，我打算编写批处理文件并按如下方式运行。

trimmer.bat file1.txt 2 8

以下此代码有以下限制（a）文件开放/修改两次（b）修剪范围内的空白行（我不想删除这些行）

请帮我纠正

@echo off
rem %1% file name  %2%range begins   %3%range ends

rem Step1: this code trims the bottom section
set /a bot_trim=%3
echo Removing...
for /f "skip=%bot_trim% delims=*" %%a in (%1) do (
echo %%a >>newfile.txt
) >nul
echo Lines removed, rebuilding file...
xcopy newfile.txt %1 /y >nul
echo File rebuilt, removing temporary files
del newfile.txt /f /q >nul
echo file bottom trimmed...

rem Step2: this code trims the Top section
set /a Top_trim=%2-1
echo Removing...
for /f "skip=%Top_trim% delims=*" %%a in (%1) do (
echo %%a >>newfile.txt
) >nul
echo Lines removed, rebuilding file...
xcopy newfile.txt %1 /y >nul
echo File rebuilt, removing temporary files
del newfile.txt /f /q >nul
echo file bottom trimmed...
echo file trim completed !!
pause

file1.txt的内容

aa
ff
ff

dd
dd

ee
ee
ee

Answer 1

@ECHO OFF
SETLOCAL
FOR /f "tokens=1-3 delims=:" %%a IN ('FIND /c /v "" %1') DO IF "%%c"=="" (SET /a endline=%%b-%3) ELSE (SET /a endline=%%c-%3)
ECHO %2 %endline%
(
FOR /f "tokens=1*delims=:" %%a IN ('findstr /n /r "^" %1') DO (
 IF %%a gtr %endline% GOTO done
 IF %%a gtr %2 ECHO(%%b
)
)>newfile.txt

:done

GOTO :EOF

旨在满足您的原始规格。不试图满足文件/目录名中的空格和批次重要符号，但如果需要，可以使用目录名。

以:开头的行会被损坏。

制作newfile.txt

通过批处理文件修剪文本文件

1 个答案: