$line contains a line of text from the file, you can't use that as an index into the array.    You need to do something like this: 

foreach my $index ( 0 .. $#hosts ) {
    if ( $hosts[ $index ] =~ /$ARGV[0]/ ) {
        print $hosts[ $index ];
        delete $hosts[ $index ];
        }
    }

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In reply to Re: deleting a non-numeric scalar within array by jwkrahn
in thread deleting a non-numeric scalar within array by pipeops

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