On May 7, 2022, at 1:24 PM, Constantine Vassilev <thst...@gmail.com> wrote:
> 
> I need to write a program that reads STDIN and should output every line that 
> contains a search word "test" to STDOUT. 
> 
> How I can test that considering the problem is a line can be 100s of MB long 
> (\n is line end) and tens of MB info is passed to it.

What do you mean by "tens of MB info"? Do you mean the search
string can be tens of MB long or something else? Is the search
string really "test" or can it be anything? Can it be a regular
expression? Describing a problem clearly and accurately is half
the battle.

Anyway, think about what you would have to do if lines were so long
they *didn't* fit in memory! [Alternatively think what you would
have to do on a PDP11!]

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