Alternately to what JavaFan said, you could also do this:
use File::Slurp;
chdir "/tmp/test";
my @files = grep { -f and /^\d{8}\.\d{6}\.host\d\.\d{1,6}$/ } read_dir
+ ".";
print "Got ". scalar(@files) . "\n";
Of course, if the script is going to do anything else, and needs to keep track of the original working directory, use Cwd to find out where you are before you do chdir.
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