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  1. daatee="$(date +%Y%m%d)"
  2. NumLines="$(sed -n '$=' test.txt)"
  3. sed -i "$ a $daatee|$NumLines" test.txt
  4.  
  5. sed -i "$ a $(date +%Y%m%d)|$((`wc -l test.txt` - 2))" test.txt
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