What is the fastest way to search for a text that is in a variable (e.g. $text) in a file (e.g. data.txt) ?

one way i thought about is opening the file and going line by line and checking if $text is there( by using =~). but it takes some time when the file get's big (like 3 or 4 Megabites).
So how can i make it faster ?

In reply to Search a text in a file by chiburashka

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