Bashscripts.org

total=0
echo "What is the length of the floor of the room (in ft)"
read length
echo "what is the width of the floor of the room (in ft)"
read width
let "sqroom= $length * $width"
echo "Please choose a carpet: all purpose - 2 dollars per sq.ft., plush - 3 dollars per sq. ft., shag - 4 dollars per sq.ft."
read carpet
echo "Is an installation required? (75 dollar fee) Yes or No"
read install
echo "How many rooms require carpet?"
read rooms
if [ "$carpet" = "all purpose" && "install" = "yes" ]

   then
      let "total = $sqroom * $rooms * 2  + 75"

      elif [ "$carpet" = "all purpose" && "$install" = "no" ]
      
      then

      let "total = $sqroom * $rooms * 2"

elif [ "$carpet" = "plush" && "$install" = "yes" ]

      then

      let "total = $sqroom * $rooms * 3  + 75"

      elif [ "$carpet" = "plush" && "$install" = "no" ]
      
      then

      let "total = $sqroom * $rooms * 3"
elif [ "$carpet" = "shag" && "$install" = "yes" ]

      then

      let "total = $sqroom * $rooms * 3  + 75"

      elif [ "$carpet" = "shag" && "$install" = "no" ]
      
      then +:)

      let "total = $sqroom * $rooms * 3"
fi
echo "your total is $total"

    then +:)

# THIS
if [ "$carpet" = "all purpose" && "install" = "yes" ]

# Should be something like this:
if [ "$carpet" = "all purpose" ] & [ "install" = "yes" ]