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Aerometric between variables

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# 1  
Old 12-01-2005
Aerometric between variables
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  
Old 12-01-2005
Try This
variable3 = $(($cariable1/$variable2))
echo $variable3

Regards,
Rahul.
# 3  
Old 12-01-2005
variable1<$variable2 tesult is zero
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  
Old 12-01-2005
Or to include decimal-points use bc:-

variable3=`echo "scale=2;$variable1/$variable2|bc -l`
# 5  
Old 12-01-2005
coman syntax is not clear
Syntex is not clear. It is not working

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

Regards,
Mahesh
# 6  
Old 12-01-2005
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  
Old 12-01-2005
missing quote
Quote:
Originally Posted by grasper
Or to include decimal-points use bc:-

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