mathematics operations in unix

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# 1  
Old 11-20-2001
mathematics operations in unix

Hello guys!

Can say me anybody about operatios with unix, I don't to make operations, only inside in a variable, like this

#let z=$y-$x
#echo $z
# 2

but I can't to make mathematical operations with decimal like this

#let z=$y-$x
#echo $z
# 3

this operations, I get result integers.

# 2  
Old 11-20-2001
That's right. The shell's built-in arithmetic is integer only. Try using bc instead...

z=`echo $y - $x | bc`
echo $z
# 3  
Old 11-22-2001
Thanks for my question answer

I apreciate the help you gave me about my mathematic problem, it help me a lot.

Thanks Perderabo
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