# https://regex101.com/r/AsjSye/5
# regex : (<select.*class\s*=\s*\".*)(required span12)(.*\"\s*>)
# Find Text : <select class="required span12"> change to <select class="chosen-select required span12">
# why use ? if you have 1000 Files and want to change it
# Change with ack + perl -pi -E
$ ack -l "(<select.*class\s*=\s*\".*)(required span12)(.*\"\s*>)" | xargs perl -pi -E "s/(<select.*class\s*=\s*\".*)(required span12)(.*\"\s*>)/\$1chosen-select required span12\$3/g"
Thanks To : @dev-makassar @yusrideb