creating a user with only read permissions on all files

Is there a way so that I can create a "quasi-root" user which has read
permissions on all systemwide files but write permissions just for its own.

Frequently I find myself running cron jobs ( say, to find disk usages for
each user etc., or inventoring all html files, or tracking coredumps etc.)
on user directories and I was previously running them as root since they
need access to all files to be able to inventory them. But in fact no write
access is actually needed to do the job.

Hence I was wondering if I could adopt a "just enough previlages to do the
job principle"?

Any sugesstions?

--
Rahul
.

Relevant Pages

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