[文本处理] [已解决]批处理如何判断字符串是否存在？

@echo off
findstr /ibc:abc a.txt>nul&&set str=abc&&set a=0||set str=xyz&&set "a="
for /f "delims=" %%i in (a.txt) do (
    set str=%%i
    setlocal enabledelayedexpansion
    if /i "!str:~,3!" == "%str%" (
       if not defined a echo,!str!
       set "str=ABC888"
    )
    echo !str!
    endlocal
)
pause
复制代码

@echo off
set "原文件名=a.txt"

for /f "tokens=1-3 delims=-/\:. " %%a in ("%date%") do set "当前日期=%%a%%b%%c"
for %%a in ("%原文件名%") do set "新文件名=%%~na%当前日期%%%~xa"

findstr /ibc:abc a.txt>nul&&set str=abc&&set a=0||set str=xyz&&set "a="
for /f "delims=" %%i in ("%原文件名%") do (
    set str=%%i
    setlocal enabledelayedexpansion
    if /i "!str:~,3!" == "%str%" (
       if not defined a echo,!str!
       set "str=ABC888"
    )
    echo !str!
    endlocal
)>"%新文件名%"
pause
复制代码

@echo off
set "原文件名=a.txt"
for /f "tokens=1-3 delims=-/\:. " %%a in [color=Red](%date%[/color]) do set "当前日期=%%a%%b%%c"
for %%a in ("%原文件名%") do set "新文件名=%%~na%%当前日期%%~xa"
findstr /ibc:abc a.txt>nul&&set str=abc&&set a=0||set str=xyz&&set "a="
for /f "delims=" %%i in ([color=Red]a.txt[/color]) do (
    set str=%%i
    setlocal enabledelayedexpansion
    if /i "!str:~,3!" == "%str%" (
       if not defined a echo,!str!
       set "str=ABC888"
    )
    echo !str!
    endlocal
)[color=Red]>>[/color]"%新文件名%"
pause
复制代码