linux 分割字符串

#!/bin/bash
string="hello,shell,haha"  
array=(${string//,/ })  
for var in ${array[@]}
do
   echo $var
done 

　其中，// 和 /之间的分隔符，而且 / 后面有个空格

#!/bin/bash
string="hello,shell,haha"
OLD_IFS="$IFS"
IFS=","
array=($string)
IFS="$OLD_IFS"
for var in ${array[@]}
do
   echo $var
done