... :次序指的是文章内容在文章中的组织? 问号 question mark “ ” 双引号 double quotation mark ‘ ’ 单引号 single quotation mark ...
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If the double quotation mark is the outermost quote, all variables are expanded.
如果最外边的引号是双引号,那么展开所有变量。
A double quotation mark (") is missing at the end of the string being echo-ed.
echo 后面的字符串的末尾缺少一个双引号(")。
Use of double quotation mark delimiters on Linux and UNIX-based systems is recommended.
建议在基于Linux和UNIX的系统中使用双引号分隔符。
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