How to find the number of occurrences of a string in file using windows command line?

Question

I have a huge files with e-mail addresses and I would like to count how many of them are in this file. How can I do that using Windows\' command line ?

I have tried

Answer 1

May be it's a little bit late, but the following script worked for me (the source file contained quote characters, this is why I used 'usebackq' parameter). The caret sign(^) acts as escape character in windows batch scripting language.

@setlocal enableextensions enabledelayedexpansion    
SET TOTAL=0
FOR /F "usebackq tokens=*" %%I IN (file.txt) do (
    SET LN=%%I
    FOR %%J IN ("!LN!") do (
        FOR /F %%K IN ('ECHO %%J ^| FIND /I /C "searchPhrase"') DO (
            @SET /A TOTAL=!TOTAL!+%%K
        )
    )
)
ECHO Number of occurences is !TOTAL!