First, let's create a test bed so we can tell if we got it right!

use strict;

my $correctanswer = "11408";

my $regexp = qr/^([\d]+)*(hullBts_static)/;

while (<DATA>) {
    if ( /$regexp/ ) {
        if ( $1 eq $correctanswer ) {
            print( "Congratulations, the regexp is correct!" );
            exit( 1 );
        } else {
            die( "Error, match was $1" )
        }
    }
}
die( "Error, never matched" );

__DATA__
11299 pts/4    00:00:00 su
11303 pts/4    00:00:00 bash
11403 tty2     00:00:00 bsc_static
11406 tty2     00:00:00 rtpTrau_static
11408 tty2     00:11:30 hullBts_static
11418 pts/4    00:00:00 tail
12157 pts/5    00:00:00 su
[download]

Well if I run this test code I get:

Error, never matched at /tmp/hullbts.pl line 17, <DATA> line 7.
[download]

Clearly something is wrong. I suggest taking a closer look at the regexp and what you're trying to match.

First you want the beginning of a line. Then as many digits in a row as possible. Then anything until we find "hullBts_static". With this in mind let's have another look at a regexp:

my $regexp = qr/
                ^              # beginning of line
                (\d+)          # as many digits as we can find
                .*             # anything at all
                hullBts_static # literally, "hullBts_static"
               /x;
[download]

When substituting this new regexp we get the following output from the test script:

Congratulations, the regexp is correct!
[download]

Note that the /x at the end of the regular expression merely allows us to spread the expression over several lines. That regular expression looks, more compactly, like /^(\d+).*hullBts_static/.

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