I would do that in bash (which is perfect to execute commands)
for f in /path/to/files/*RAN*.log
do
   script "$f" > "$f".pd
done

[download]
If you want to do that in perl:
See glob for globbing, and system for executing and maybe perlsyn for foreach syntax
Regards, Updated to double quote vars (thanks to cdarke)

In reply to Re: Opening files from a directory and batch processing into new files by i5513
in thread Opening files from a directory and batch processing into new files by savem

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