not perl, but.. assuming that by "30 days older" you mean files that have had their content last changed 30+ days ago: 
find  . -mtime +30 -exec rm -v '{}' \; >logfile.txt

[download]
Be careful where you run that.

updated: added quotes

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: Deleting Files by Joost
in thread Deleting Files by mantra2006

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