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Bat file script to check if a string contains another string

I need to write a batch file that will check if a variable contains a specific value. I tried the following:

If "%%a"=="%%a:%pattern%" (
    echo Yes
) else (
   echo No
)

example input: %% a = "bob binson"% Lacquered% = "binson"

I never get Yes, printed! can anyone please tell me what i missed or give an example of how he would do this?

Thanks in Advance

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1 answer


Substring operations are not available in for

pluggable parameters. You need to assign data to a variable and then perform an operation on that variable



@echo off
    setlocal enableextensions disabledelayedexpansion

    >"tempFile" (
        echo bob binson
        echo ted jones
        echo binson
    )

    set "pattern=binson"

    for /f "usebackq delims=" %%a in ("tempFile") do (
        echo data: %%a

        set "line=%%a"
        setlocal enabledelayedexpansion
        if "!line:%pattern%=!"=="!line!" (
            echo .... pattern not found
        ) else (
            echo .... pattern found
        )
        endlocal
    )

    del /q tempFile
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