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

...

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

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