目录权限说明常见的权限修改权限总结权限说明 ls -l <文件名> -rw-rw-r-- 一共有10位数，其中：
I have several \'select\' elements on the page. When I choose some ofoptions, the ajax request is being sent to server and the element adjacent to this \'select\' must be updated with response value.
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