Shell Programming and Scripting

#while duration is greater than 1
while [[ $DURATION -gt 1 ]]
do
	FEE=$((FEE + 2)) #I can't seem to make add fractional numbers 
	DURATION=$((DURATION-1))
done

sum=$(echo ".3 + 1.12" | bc -l)
a=.13
b=.01
diff=$( echo "$a - $b" | bc -l)

do
	FEE=$((echo "$FEE + 1.5" | bc -l)) 
	DURATION=$((DURATION-1))
done

$ cat float_example.ksh
#!/usr/dt/bin/dtksh

typeset -F a=2.3  # Declare variables as floats.
typeset -F b=1.2
typeset -F result

result=$( (($a + $b)) )

printf "a=%4.2f\n" $a
printf "b=%4.2f\n" $b
printf "a+b=%4.2f\n" $result

exit 0

$ float_example.ksh
a=2.30
b=1.20
a+b=3.50
$