You can use man chmod to read about it. The command
使用man chmod来阅读相关内容。
Good command of English, as a basic requirement to read and write email fluently.
拥有良好的英语能力，最基本须达到顺利阅读和书写电邮的水平。
If you want to reach a good command of English, you must read a lot.
如果你想要达到精通英语，你必须大量阅读。
How do I read data from the command prompt and write to a file?
我如何从命令提示符读取数据和写入文件？
How do I read data from the command prompt and write to a file?
我如何从命令提示符读取数据和写入文件？
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