Help using math in unix script

[Kipnep70]

I have a question...

I know how to do simple math such as:

answer=$(( 5 + 2 ))

but how do I get the shell to return a decimal number like:

answer=$(( 5 / 2 ))

The above returns a 4 and mod returns a 1, but what if I want to have returned a 4.5?

 

[PHV]

For me you must use ksh-93 to do floating point math.
A workaround is to use bc or awk

Hope This Helps, PH.
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