Aerometric between variables

Shell Programming and Scripting
1

Hi Guys,

I want to know how to do aerometric operations between two variable in bash shell and tc shell.

I have pre defined variables as follows,

vatiable1=12
variable2=45

I want to get assigned the division of these two variable to another variable.
I used following command, but it is not working.

expr variavle3 = ($cariable1/$variable2)
echo $variable3

Please somebody tell me how should I correct my command.

Regards,
Mahesh

2

variable3 = $(($cariable1/$variable2))
echo $variable3

Regards,
Rahul.

3

Hi,

Thanks for the quick reply.

The given syntex is working fine. But problem is when the variable1<$variable2 the result gives as 0.

I tried to print it with printf aalso but it is not work.

please help to solved this.

Thanks
Mahesh

4

Or to include decimal-points use bc:-

variable3=`echo "scale=2;$variable1/$variable2|bc -l`

5

Syntex is not clear. It is not working

variable3=`echo "scale=2;$variable1/$variable2|bc -l`

Regards,
Mahesh

6

Try cutting and pasting the command rather than typing it. It should work in bash.

Also typing 'which bc' to see if you've got the bc processor in your path.

7

missing quote

8

It was indeed - should have taken my own advice and cut-and-pasted from the terminal!

Apologies for that. Cheers vgersh99.

9

Is it possibe to do this with out using bc ?

Regards,
Mahesn

10

Well awk can handle non-integer arithmetic, but not standard bash or tcsh.