1# Who said shells can't use recursion? Here is a factorial function. 2# You call it with a number as an argument, and it returns the factorial 3# of that number. 4 5fact () 6{ 7 local num=$1; 8 if [ "$num" = 1 ] ; then 9 echo 1 10 return ; 11 fi; 12 echo $(( $num * $(fact $(( $num - 1 )) ) )) 13} 14