Percentage calculation

Shell Programming and Scripting
1

i am trying to get percentage : but not able to do it:

i tried :
x=1
y=2
z=`expr $x/$y*100`

it is not giving me result

can u pls help on this

2

try multiplying by 100 first:

z=$((100*$x/$y))

or alternatively use bc :

z=$(echo "scale=2 ; ($x/$y*100)" | bc)
3

i tried it :

z=$(echo "scale=4 ; ($x/$y*100)" | bc)

bt it is giving result : 33.3300
x=1
y=3

i want 33.33

4

That's because you set scale to '4' which is the number of digits right of the decimal point... So leave scale to '2' and it should work.

5

it is coming 33.00

i need 33.33

how i will do it ?