The following script
jq -r '.[] | $(echo .key | awk -v stg="$STAGE" '{ gsub("/"stg"/COMMON/", "", $0); gsub("/", "_", $0); print $0 })' + "=\"" + (.value|tostring) + "\""' tmp_common_params > tmp_common_params_cleaned
is giving error though
$(echo .key | awk -v stg="$STAGE" '{ gsub("/"stg"/COMMON/", "", $0); gsub("/", "_", $0); print $0 })
works individually
bash: syntax error near unexpected token `('