bash 循环中变量作用范围的问题

#!/bin/bash

for x in `ls */.*/.*`
cat $x|do echo $x
while read line
  do
    c=`echo $line|linuxjishu/13830.html target=_blank class=infotextkey>awk -F'(' '{print $1}'`
    #echo $c
    i=$((i+$c))
  done
  echo
done

echo $i

#!/bin/bash

for x in `ls */.*/.*`
do echo $x
while read line
  do
    c=`echo $line|awk -F'(' '{print $1}'`
    #echo $c
    i=$((i+$c))
  done<$x
  echo
done

echo $i