I am having trouble with finding out how to use popen() to grab stdout from child programs in Linux to a main C++ program. I was looking around and found this snippet of code that does what I want ...

Jan 23, 2018 · 46 popen() gives you control over the process's input or output file streams. system() doesn't. If you don't need to access the process's I/O, you can use system() for simplicity. system() is …

May 15, 2015 · I'm trying to do inter process communication with stdin and stdout. The Posix function I found is popen, but I failed to write a working sample code. Please help me get this work. …

Sep 26, 2012 · Since os.popen is being replaced by subprocess.popen, I was wondering how would I convert

6 Beware that Popen.communicate(input=s) may give you trouble if s is too big, because apparently the parent process will buffer it before forking the child subprocess, meaning it needs "twice as much" …

May 24, 2015 · The call to Popen returns a Popen object. call does block. While it supports all the same arguments as the Popen constructor, so you can still set the process' output, environmental …

How to do multiple arguments with Python Popen? Asked 13 years, 7 months ago Modified 4 years, 11 months ago Viewed 105k times

As a further corollary, on modern Python you want to avoid Popen whenever you can; with subprocess.check_call this is a one-liner which doesn't require the communicate() song and dance.

I'm trying to make a system call in Python and store the output to a string that I can manipulate in the Python program. #!/usr/bin/python import subprocess p2 = subprocess.Popen("ntpq -p") I've t...

The boilerplate combo of Popen + communicate is unnecessary bloat. The standard library provides subprocess.run and the legacy subprocess.check_output and subprocess.check_command precisely …