in reply to Re^4: "Invalid request code "error
in thread "Invalid request code "error

Can anyone let me know which grep(Cygiwn,gnu,perletc) should we normally use on windows?

Eh?

Where does correct "grep.exe" reside on windows?

Nowhere. grep doesn't come with windows

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Re^6: "Invalid request code "error
by Anonymous Monk on Mar 20, 2011 at 05:27 UTC

    CC ,i know - which grep utility are you using?

      Got the right grep utility - topic over :-)