#!/bin/bash# multiplication.shmultiply ()                     # 將乘數(shù)作為參數(shù)傳遞進(jìn)來. {                               # 可以接受多個參數(shù).   local product=1  until [ -z "$1" ]             # 直到處理完所有的參數(shù)...  do    let "product *= $1"    shift  done  echo $product                 #  不會echo到stdout, }                               #+ 因為要把它賦值給一個變量. mult1=15383; mult2=25211val1=`multiply $mult1 $mult2`echo "$mult1 X $mult2 = $val1"                                # 387820813mult1=25; mult2=5; mult3=20val2=`multiply $mult1 $mult2 $mult3`echo "$mult1 X $mult2 X $mult3 = $val2"                                # 2500mult1=188; mult2=37; mult3=25; mult4=47val3=`multiply $mult1 $mult2 $mult3 $mult4`echo "$mult1 X $mult2 X $mult3 X $mult4 = $val3"                                # 8173300exit 0