Question

the problem is in this line

elif [  "$(echo $a '>' $v06 | bc -l)"  -eq 1  &&   "$(echo $a '<' $v08 | bc -l)" -eq 1  ];then

How can I test if the number is in range ?
I know that there might be other solution for this but I want to solve in this way with bc…

a=0.1
v06=0.6
v08=0.8

if [ "$(echo $a '<' $v06 | bc -l)" -eq 1 ];then
    echo " <0.6"
elif [  "$(echo $a '>' $v06 | bc -l)"  -eq 1  &&   "$(echo $a '<' $v08 | bc -l)" -eq 1  ];then
    echo " <0.6 >0.8"
else
    echo ">1.5"
fi

Answer 1

If you really want to use bc:

test1=$(bc -l <<< "${a} < ${v06}")
test2=$(bc -l <<< "${a} > ${v06}")
test3=$(bc -l <<< "${a} < ${v08}")
if [[ ${test1} -eq 1 ]]; then
   blabla
elif [[ ${test1} -eq 1 && ${test2} -eq 1 ]]; then 
   blabla
fi

I recommend to use braces around a variable (so you are sure 06 and 08 won’t be append to $v), use double brackets in your tests if you are using operators like &&.