I work in a secondary school with 3 IT labs. Every lab has their own PiHole and I would like to import regex filters from a txt file on a shared drive on a regular basis. Updating the file regex.list works well using crontab and grep but still the students can reach all and every one of the restrict…

Try running that file through the dos2unix utility on the Pi-hole device. It looks like there are Windows style line endings with that file.