in reply to search a large text file

No need to sort, given your description of the problem.

my @found;
while( <file> ) {
    next unless m/text2/; # Reject disqualified lines quickly.
    m/\s+(\d+)/ or die "Unexpected data format at file line $.\n";
    push @found, $1;
}

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Dave

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Re^2: search a large text file
by perl_lover_always (Acolyte) on Feb 08, 2011 at 13:03 UTC
    since my file is big and my searches are often and numerous, searching with this method over a large file is very slow.
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