$*和$@之间区别代码分析

#!/bin/bash

set 'apple pie' pears peaches

for i in $*           /*单引号被去掉，循环单个字符输出*/

do echo $i

done

[root@luozhonghua ex_14.02-14.31]# sh 14-14-1

apple

pie

pears

peaches

--------------------------------------------------------------

for i in "$*"      /*单引号被去掉，但当作字符串一次输出*/

[root@luozhonghua ex_14.02-14.31]# sh 14-14-2

apple pie pears peaches

[root@luozhonghua ex_14.02-14.31]#

-----------------------------------------------------------------

for i in $@          /*单引号被去掉，循环单个字符输出*/

do echo $i     

[root@luozhonghua ex_14.02-14.31]# sh 14-14-3

for i in "$@"      /*每个位置参数都将当成一个加引号的字符串:"apple pie","pears ","peaches"*/

[root@luozhonghua ex_14.02-14.31]# sh 14-14-4

apple pie