How to replace a specific pattern in a file or folder name. In my case I needed to correct the season on each file of a series from “S08” to “S09”:
for f in *; do mv "$f" "$(echo "$f" | sed s/S08/S09/)"; done
If you want to replace a pattern recursive, use the command “find”:
find . -name '*' -exec bash -c 'echo mv $0 ${0/S08/S09}' {} \; // with echo for testrun