how can I capture data which will be sent to the stdout in c++? I found here: // This can be an ofstream as well or any other ostream
I would like to p开发者_高级运维ipe standard output of a program while keeping it on screen. With a simple example (echo use here is just for illustration purpose) :
Calling subprocess.check_call() allows to specify a file object for stdout, but before writing the data to a file, I would like to modify them on a line-by-line base.
With C++ how do i launch an exe/process with stdin stdout and s开发者_运维问答tderr? I know how to do this in .NET and i remember using popen in the past but popen seems to allow stdin OR stdout not b
开发者_StackOverflowHow can you limit the count of standard output characters that is redirected to file?Other ways (external)
i havea call like this. int fd[2]; pipe(fd) 开发者_StackOverflow and then dup2(fd[WRITE],STDOUT_FILENO)
So, I have been facing a problem with using subprocess for a python app i am writing. To illustrate the problem, I wrote this small script that replicates my p开发者_开发问答roblem pretty well.
I\'m trying to redirect the output from a SWIG-wrapped C module to a python class. The SWIG caller is a python class which already has sys.stdout overwritten in the following way:
I\'m writing a linux shell for a custom scripting language, and I want to print a \"... \" before each follow-up line a user enters for a single statement, with the first line having a \">>> \" printe
Is it possible for a caller program in C to know how many bytes it has printed to a file stream such as stdout without actually counting and adding up the return values of pri开发者_JS百科ntf?
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