my_script.pl  *.foo   # (matches all files with a ".foo" extension"

#or:

my_script.pl this_long_name.txt that_other_long_name.xml
# where hitting <tab> after "thi" and "tha" completes each name automatically

##</code><code>##

#!/usr/bin/perl
...
printf "There were %d files mentioned on the command line:\n", scalar @ARGV;
print join "\n", @ARGV, '';
...