Add exports to env setup.

example.env

@@ -1,17 +1,17 @@
 # Variables for fast-access of production server.
 
-PROD_HOST=example.com
-PROD_PORT=2222
-PROD_USER=user
+export PROD_HOST=example.com
+export PROD_PORT=2222
+export PROD_USER=user
 
-PROD_GIT_HOST=git.example.com
-PROD_GIT_PORT=8080
-PROD_GIT_USER=git
+export PROD_GIT_HOST=git.example.com
+export PROD_GIT_PORT=8080
+export PROD_GIT_USER=git
 
-PROD_DATA_HOST=sftp.example.com
-PROD_DATA_PORT=2200
-PROD_DATA_USER=data
-PROD_DATA_DIR=/srv/sftp
+export PROD_DATA_HOST=sftp.example.com
+export PROD_DATA_PORT=2200
+export PROD_DATA_USER=data
+export PROD_DATA_DIR=/srv/sftp
 
 PROG="$(basename -- "${BASH_SOURCE[0]}")"
 echo "'`date` - $PROG' completed!"