base-files.old/usr/lib/os-release

   1 NAME="Ubuntu"
   2 VERSION="18.04.2 LTS (Bionic Beaver)"
   3 ID=ubuntu
   4 ID_LIKE=debian
   5 PRETTY_NAME="SereneLinux_19Q1.7.1_R1"
   6 VERSION_ID="18.04"
   7 HOME_URL="https://www.ubuntu.com/"
   8 SUPPORT_URL="https://help.ubuntu.com/"
   9 BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  10 PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  11 VERSION_CODENAME=bionic
  12 UBUNTU_CODENAME=bionic