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for old legacy systems, keeping /etc/ in RC is (and has been) a massive godsend.

Its nice to see a rarely used bit of software from 31 years ago still being maintained.

Nowadays I sometimes create a git repo in my /etc directory

I use etckeeper, which is basically the same thing except with some nice hooks like auto-commit on apt-get install.

And fixes the permissions. With /etc in git it becomes world-readable.

A script that gets the current permissions for every file/dir and emits a chmod command for each one is pretty handy.