Without changing your code too much, you might do something like this. The basic idea is that you have a flag telling you whether you've hit DETS01 yet or not, then flip the flag when you hit it.

#!/usr/bin/perl -w
open (INPUT, "target.txt")   or die "can't read from target:$!\n";
open (OUTPUT1, ">file1.txt") or die "can't write to file1.txt:$!\n";
open (OUTPUT2, ">file2.txt") or die "can't write to file2.txt:$!\n";

#
#
my $firsthalf = 1;

while (<INPUT>) {
    if ($_ =~ /^DETS01/) {
        $firsthalf = 0;
    }

    if ($firsthalf) {
        print OUTPUT1 $_;
    }
    else {
        print OUTPUT2 $_;
    }
}
close (INPUT);
close (OUTPUT1);
close (OUTPUT2);

[download]

Edit: Removed commas after filehandles in prints. Thanks, tadman!

"One word of warning: if you meet a bunch of Perl programmers on the bus or something, don't look them in the eye. They've been known to try to convert the young into Perl monks." - Frank Willison

In reply to Re: How to scan a file, find a character string and print from that string to EOF by myocom
in thread How to scan a file, find a character string and print from that string to EOF by 0p3nfac3

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