less定义字符串数组

在Shell中，可以通过以下方式定义一个字符串数组：

less=("string1" "string2" "string3")

其中，`less`是数组的名称，`string1`、`string2`和`string3`是数组的元素。你可以根据需要添加或删除元素。请注意，数组的索引从0开始，所以`string1`的索引是0，`string2`的索引是1，以此类推。
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