Question

请问如何用批处理的方法解决下以问题

比如a.txt里面的N条记录,
2134567
3217891
4659781
4659132
6547831
5461245
4564561
......
能否在记录前插入一行序号,变成如下:
1 2134567
2 3217891
3 4659781
4 4659132
5 6547831
6 5461245
7 4564561
N...... (注:N是未知的)

Answer 1

aaa
bbb
ccc
小计(111345435688768)
ddd
eee
fff
小计(222)

代码如下:
@echo off
setlocal ENABLEDELAYEDEXPANSION

set "fn=test.txt" ::要处理的文件名 处理后的文件名为 ~test.txt,就是源文件名前面加上了~

del "~%fn%" 2>nul
set num=0
for /f "tokens=1-2 delims=()" %%i in (%fn%) do (
set /a num=num+1
if not "%%j"=="" echo !num! %%j>>~~%fn%
)
set "hang=-1"
set str=

set index=1
set "num=0"
set "sig=0"
call :strs

for /f "tokens=*" %%i in (%fn%) do (
set /a num=num+1
if "!hang!"=="!num!" (
set /a index=index+1
call :strs
echo !num! %%i>>~%fn%
) else (
echo !num! !str! %%i>>~%fn%
)
)
del ~~%fn%
pause
exit

:strs
set sig1=0
for /f "tokens=1*" %%8 in (~~%fn%) do (
set /a sig1=sig1+1
if !index!==!sig1! set "hang=%%8" & set "str=(%%9)"
)

Answer 2

@echo off
setlocal EnableDelayedExpansion
if exist __a.txt del __a.txt
set /a c=0
for /f %%i in (a.txt) do (set /a c=c+1
echo !c! %%i>>__a.txt)

运行完后会出现__a.txt 里面的内容满足要求

追问

zhaojiefeng119 |的答复,是可以的,但若几万条记录,好象就不对?