pipe output to stdin of a process and capture output

Question

Brandon Barker 2013-3-16

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/67402-pipe-output-to-stdin-of-a-process-and-capture-output

In UNIX, I'd simply run the command like so: cat file_to_stdin | ./minDisj other_input_file > output_file.txt

What I'd like to do is run this in MATLAB, with the text normally contained in file_to_stdin being input directly from MATLAB (e.g. I have a cell array I'd like to print in to the stdin) and then capture and process the output that would come from minDisj's stdout.

The system command seems capable of doing everything but directing chosen MATLAB output to the stdin of the process.

Other that potentially using named pipes (fifos), is there an easier alternative?

I can recompile minDisj above to handle its input in other ways, but I'd prefer not to print out to a file first, as this is both messy and slow, and dealing with fifos seems to be overkill (but may be necessary).

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Walter Roberson 2013-3-16

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/67402-pipe-output-to-stdin-of-a-process-and-capture-output#answer_78832

编辑：Walter Roberson 2013-3-16

MATLAB has no facility for interactively piping. You need to write to a named pipe, or write to a file and redirect from the file, or write a mex routine that will handle creating the pipes for you. (Caution: if you do that, watch out for MATLAB liking to handle its own buffering.