Linux编程笔记的相关内容

linux shell脚本编程笔记（五）：重定向

I/O重定向简述：默认情况下始终有3个"文件"处于打开状态, stdin (键盘), stdout (屏幕), and stderr (错误消息输出到屏幕上). 这3个文件和其他打开的文件都可以被重定向. 对于重定向简单的解释就是捕捉一个文件, 命令, 程序, 脚本, 或者甚至是脚本中的代码块的...

linux shell脚本编程笔记（二）：分支结构

1.if if command then commands fi if command then commands else commands fi if command1 then command set 1 elif command2 then command set 2 elif comman...

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