Find

find . -name versions.tf -type f -print0 | xargs -0 sed 's/required_version = \">= 0.13\"/required_version = \">= v1.12.2\"/g'

find . -name versions.tf -type f -print0 | xargs -0 sed '/.*source.*/i \     \ version = \"~> 1.12.2\"'

find . -name filename.txt -type f -print0 | xargs -0 cp /tmp/newfilecontents.txt

Permissions

find /var/www/html -type d -exec chmod 755 {} \;
find /var/www/html -type f -exec chmod 644 {} \;


find /var/www/html -type d -exec chmod u=rwx,go=rx {} \;
find /var/www/html -type f -exec chmod u=rw,go=r {} \;