exit not return

src/freedombone-splitkey

            $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
 if [ ${#KEYID} -lt 4 ]; then
     echo $"gpg key for $MY_EMAIL_ADDRESS was not found"
-    return 3682
+    exit 3682
 fi
 
 MY_BACKUP_KEY_ID=$(gpg --list-keys "$MY_NAME (backup key)" | \
                           awk -F '/' '{print $2}')
 if [ ${#MY_BACKUP_KEY_ID} -lt 4 ]; then
     echo $"gpg backup key for '$MY_NAME' was not found"
-    return 58213
+    exit 58213
 fi
 
 # create the key file