中国DOS联盟

1234
1234

dsf
fd
d
a

asd

setlocal enabledelayedexpansion

for /f "tokens=*" %%a in ('findstr /n .* a.txt') do (

  set str=%%a

  set str=!str:*:=!

  set str=!str:d=m!

  echo.!str!

)

pause

1234
1234

msf
fm
m
a

asm

1234
1234
d=m
msf
fm
m
a
d=m
asm

@echo off&setlocal enabledelayedexpansion

for /f "tokens=*" %%a in ('findstr /n .* a.txt') do (

  set str=%%a

  set str=!str:*:=!

  if defined str set str=!str:d=m!

  echo.!str!

)

pause

Originally posted by lpk130 at 2008-4-27 07:40 PM:
setlocal enabledelayedexpansion
for /f "tokens=*" %%a in ('findstr /n .* a.txt') do (
set str=%%a
set str=!str:*:=!
set str=!str:d=m!
echo.!str!
)
pause
...

@echo off&setlocal enabledelayedexpansion

for /f "delims=" %%i in ('type a.txt') do (

    set str=%%i

    set str=!str:d=m!

    echo.!str!

)

pause>nul

for /f ('more') echo >nul 2806.7
for /f ('type') echo >nul 3932.1
for /f ('findstr .*') echo >nul 4007.6
for /f ('find /v ""') echo >nul 2966.5
for /f ( 文件) echo >nul 9807.5

Originally posted by pusofalse at 2008-4-27 07:25 PM:
刚刚做了一下试验，发现set出现问题了

a.txt的内容
1234
1234

dsf
fd
d
a

asd

这是我的代码，就是想替换a.txt中的所有d为m,并且保留空行
setlocal ...