for循环默认以空格分割
[xiaomo@vm01 ~]$ cat test2.sh
#!/bin/bash
for i in 1 2 3 4 5
do
echo $i
done
echo "循环结束!"
[xiaomo@vm01 ~]$ ./test2.sh
1
2
3
4
5
循环结束!
[xiaomo@vm01 ~]$
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原文：http://xiaofengmo.blog.51cto.com/10116365/1744949