Hi Monks,

I want to know the previous line of the file while processing it in current line in while loop. For example see the below code 

    my $file = 'input.txt';
    open STDLOG, "$file" or die("$file file cannot be opened: $!\n");

    while (defined(my $row = <STDLOG>)) {
        chomp $row;
        print "Current line is: $row \n";
        # here i want to print the previous line 
    }

[download]


Note: Input file is not stored in array, since it is big file.

Thanks in advance
Shanmugam A.

In reply to How to get previous line of the file while processing current line in while loop by shan_emails

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