Simple Arithmatic Function

[Scott Frye_1]

I'm trying to do:

$i / $m = x
where i = 205
m = 400
and x should equal .5125. Problem is everything I've tried gives me x=0. What am I missing.

[Patrick Wallek · Accepted solution]

If this is in a script do:

x=$(echo "${i}/${m}" | bc -l)

[A. Clay Stephenson]

The problem is that the shell only does integer arithmetic. Use awk or bc.

#!/usr/bin/sh

I=205
M=400
RESULT=$(echo "scale=4; ${I} / ${M}" | bc)
echo "Result = ${RESULT}"

Man bc for details.

[Scott Frye_1]

Works perfectly Patrick. Thanks!