bash - Using selfwritten .sh file in another .sh file -

i writing small .sh program in bash.

the problem extremely simple, i.e, dind primefactors of number. i've done written .sh file check if number prime or not. here code :

if [ $# -ne 1 ];     exit fi number=$1 half=$(($number / 2)) (( i=2;i<$half;i++ ))     rem=$(($number % $i))     if [ $rem -eq 0 ];         echo "0"         exit     fi done echo "1" 

and second .sh file generate prime factors :

clear  echo "enter number : " read number half=$(($number / 2)) for(( i=1;i<=$half;i++ ))     rem=$(($number % $i))     if [ $rem -eq 0 ];         ok=`prime.sh $rem`         if [ "$ok" == "1" ];             echi $i         fi      fi done 

this line ,

ok=`prime.sh $rem` 

gives following error :

primefactor.sh: line 10: prime.sh: command not found 

so, not possible divide program smaller modules , use in other modules other programming languages ? on how achieve helpful.

call script this:

ok=`./prime.sh $rem`