Adding lines with sed - aavedula/how-to-notes GitHub Wiki
find . -type f -name "*.yml" -print0 | xargs -0 sed -i'' -e $'s/- henry-ford-health-system/- henry-ford-health-system\\\n - health-alliance-plan/g'
The -i ''
is needed on OSX.
The $' ' and \\n is the only way to get the new line in bash.