管道交互式会话到一​​个文件 [英] Piping an interactive session to a file

问题描述

我已经做了玩具的互动控制台程序，基本上是一个跨preTER：

I have made a toy interactive console program that is basically an interpreter:

$ myprogram
> this is user input
this is program output

欲管完全会话，无论用户输入和程序输出，到日志文件中。我能做到这一点，像这样：

I want to pipe the full session, both user input and program output, into a log file. I can do this like so:

$ cat | tee >(myprogram | tee -a file.log) >> file.log
> this is user input
this is program output
$ cat file.log
> this is user input
this is program output

因此​​上述会议将显示到终端如常，但也将被复制到日志文件。

So the above session will display to the terminal as usual but will also be duplicated to the log file.

有没有更好的方法来做到这一点？我不喜欢我怎么也得写日志文件两次，我也怎么也得记住运行此命令之前擦拭。

Is there a better way to do this? I don't like how I have to write the log file twice, nor how I have to remember to wipe it before running this command.

推荐答案

在简单的形式可能是

tee >(myprogram) | tee -a file.log

如果您想prevent输入被再次显示到屏幕上：

If you want to prevent input being shown again to the screen:

tee -a file.log | myprogram | tee -a file.log

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