Yeah. It's working. But print $_; is printing whole text at a time.
It is not exactly what it happening. In fact, the while loop reads one input line at a time and print $_; print each of these lines in turn. The difference is more important than you might think, as shown just below.

I want read every line. store it as an array and process.
Although you can do that, this is very rarely what you want to do. What you want to do, most of the time, is to read one line at a time with the while loop, process the line (e.g. make some changes to it and print the modified content, or extract some data for further calculation), and so on with the next line until the end of the file. The difference is that using a while loop is a lot more efficient that loading the whole file into an array if you don't need to, especially when the file is large

In reply to Re^5: File handling basics by Laurent_R
in thread File handling basics by ElectroRed

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