message: Compatible with Ubuntu 17
diff: OS_MAJ=`echo "${OS_VER}" | cut -d'.' -f1`
  OS_MIN=`echo "${OS_VER}" | cut -d'.' -f2`
  - MEM_MEG=$( free -m | grep Mem | tr -s ' ' | cut -d\ -f2 )
  - CPU_SPEED=$( lscpu | grep "MHz" | tr -s ' ' | cut -d\ -f3 | cut -d'.' -f1 )
  - CPU_CORE=$( lscpu | grep "^CPU(s)" | tr -s ' ' | cut -d\ -f2 )
  + MEM_MEG=$( free -m | grep Mem | tr -s ' ' | cut -d\ -f2 || cut -d' ' -f2 )
  + CPU_SPEED=$( lscpu | grep -m1 "MHz" | tr -s ' ' | cut -d\ -f3 || cut -d' ' -f3 | cut -d'.' -f1 )
  + CPU_CORE=$( lscpu | grep "^CPU(s)" | tr -s ' ' | cut -d\ -f2 || cut -d' ' -f2 )
  MEM_GIG=$(( (($MEM_MEG / 1000) / 2) ))
  JOBS=$(( ${MEM_GIG} > ${CPU_CORE} ? ${CPU_CORE} : ${MEM_GIG} ))
  - DISK_INSTALL=`df -h . | tail -1 | tr -s ' ' | cut -d\ -f1`
  + DISK_INSTALL=`df -h . | tail -1 | tr -s ' ' | cut -d\ -f1 || cut -d' ' -f1`
  DISK_TOTAL_KB=`df . | tail -1 | awk '{print $2}'`
  DISK_AVAIL_KB=`df . | tail -1 | awk '{print $4}'`
  DISK_TOTAL=$(( $DISK_TOTAL_KB / 1048576 ))
  