function retun value

Have been using bash for long, and never expected to have return value, as the function was written just do the repetative job

But when we need a bash function to return value, be sure that it just has one echo which is for return, any other display will be returned otherwise

here how it is..

$ cat poweroff.sh 

#!/bin/bash

##

## Program to test return value from bash script..

##

function power(){

#

# power(3,2)=9

# power(5,3)=125

#

local fv=$1

local sv=$2

local p=1

for i in ` seq 1 $sv ` ; do

p=` expr $p \* $fv `

done

echo $p

}

v1=${1:-3}

v2=${2:-2}

p1=$(power $v1 $v2)

echo "power($v1,$v2)=$p1"

# Done.

$ ./poweroff.sh 

power(3,2)=9