find . -path "*/.git/*" -name "config" -type f
# if you are sure you wan't to update all the listed file you can then run
find . -path "*/.git/*" -name "config" -type f -exec  sed -i '' 's/git-r3lab-server\.uni\.lu/gitlab\.lcsb\.uni\.lu/g' {} +;

This is a oneliner but with no output on what it does, so be warned :) ```# find the files to modify find . -path "*/.git/*" -name "config" -type f # if you are sure you wan't to update all the listed file you can then run find . -path "*/.git/*" -name "config" -type f -exec sed -i '' 's/git-r3lab-server\.uni\.lu/gitlab\.lcsb\.uni\.lu/g' {} +; ```