Update variables with a PROD Prefix in bash

prod_config.sh

# The aim is to support e.g
# URL="dburl" variables and then override at will when PROD_URL is available.

switch_prod.sh

for v in $(env | awk '/PROD_/ {gsub(/PROD_/,""); print $1}'); do
 eval "export $v"
done


#call using  must use . to source the file, otherwise the environment variables set
# are not seen by the parent process
. ./switch-prod.sh