How do I create numeric variables with decimals and divide these? 1

[markmulligansr]

How do I put the first two numbers in numeric variables and divide the first by the second to get the third number displayed below in a KORN shell script?

2.322359
5.864941
0.395973

( 2.322359 / 5.864941 ) = 0.395973

Thanks,

Mark

 

[SamBones]

echo "scale=6; 2.322359 / 5.864941" | bc -l

"[tt]man bc[/tt]" for more info.

 

[SamBones]

Or, using numeric variables...

FIRST=2.322359
SECOND=5.864941

RESULT=$(echo "scale=6; ${FIRST} / ${SECOND}" | bc -l)

print "Result is ${RESULT}"

Or something like that.

These aren't really "numeric variables" though, just string variables that are holding the numbers to be used in the calculation. The Korn shell has an Integer variable type, but not a floating point variable type (look for "typeset" in the man page).

 

[markmulligansr]

Sam's code worked great. Someone also told me about changing ksh to ksh93 and the simple divide I had in my code came up with the correct answer too.

Thanks Sam

 

[FedoEx]

In case you use bash.. In
.bashrc put

function  ca () { echo "$*" | bc -l; }

So when you need to do some simple math operation

$ca 2.322359 / 5.864941
.39597312232126461289