for do done重定向_for do{}done

for do done 重定向,do 和done 中 有echo的时候，done后面的重定向才会打出数据

#!/bin/bash
#使用数组变量
function addarray {
   local sum=0
   local newarray
   newarray=($(echo "$@"))
   for value in ${newarray[*]}
   do
      sum=$[ $sum + $value ]
      echo $sum
   done >> test.txt
   echo $sum 
}

myarray=(1 2 3 4 5)
echo "The original array is:${myarray[*]}"

for value in ${myarray[*]}
   do
      sum=$[ $sum + $value ]
      echo $sum
   done >> test.txt
   echo $sum 


arg1=$(echo ${myarray[*]})
result=$(addarray ${myarray[*]} 2)
echo "The result is $result"
# echo "------------------------------"
# result=$(addarray $arg1)
# echo "The result is $result"
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