Sounds like
grep might be the ticket here.
do_something($_) foreach grep(/DB/, @files);which will call
do_something with every element of the
@files array that has "DB" somewhere in it.
As to part (b), there's no Perl built-in equivalent to the creat system call (not that I'm aware of). If you want to create a zero-length file with a particular name, you can just write to it:
open(I, ">$filename");
close(I);
Alternatively, if you're on something Unix-y, you can use the shell to "touch" the file:
system("touch $filename");
HTH
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