循壞查詢shell，實現BMI指數計算

#！/bin/bash read -p "身高" HIGH if [[  !$HIGH=~ ^[0-2].?[0-9]{1,2}$  ]];then  echo "輸入錯誤" ；exit 1;fi read -p "體重" WEIGHT if [[ !$WEIGHT=~ ^[0-9]{1,3}$  ]] ;then echo "error";exit 1;fi BMI= echo `$WEIGHT

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