I was unaware of Schedule::Cron/Schedule::Cron and Set::Crontab/Set::Crontab for the first half of the development. In addition I attempted not to use any non-standard modules. I may consult these in the future, Set::Crontab looks promising for crontab(1).

-- 
perl -p -e "s/(?:\w);(<A HREF="/index.pl?node=st&lastnode_id=3333">st<
+/A>)/'\$1/mg"
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