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Questions - popen

Is it possible to pass popen() a string and have it return null?

While working on line/branch coverage for a unit test, I came across the following code bool run_command(char *command) { FILE *handle = popen(command, "r"); if (handle == nullptr) ...
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Epsilon

c++

linux

popen

Votes: 0

Answers: 1

Latest Answer

I don't think so. glibc's popen ultimately calls posix_spawn, whose documentation says that it only fails if fork() fails. And that would have nothing to do with the filename. Likewise, there are a ...
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Nate Eldredge

Redirect output of command line to a variable in C

Is there a way to redirect output of a command line which returns integer as an output to a variable in C? for example, if the command is "cmd", then is there a way to redirect its output (a...
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qwerty

c

system

system-calls

popen

fgets

Votes: 0

Answers: 3

Latest Answer

It works perfectly fine with popen and fgets: #include <stdio.h> #include <stdlib.h> int main(int argc, char *argv[]) { const char *cmd = argc > 1 ? argv[1] : "echo 42"; ...
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William Pursell

I am facing issue while using subprocess.Popen in Popen

My requirement is, I am calling a shell script from my python script. When the python script is executed. It shows all the shell script content(not only the echo, even the secret keys which are read f...
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Reddy

python

subprocess

popen

Votes: 0

Answers: 0

Execute .exe file and interact with it

I have a executable file (.exe) that performs 3 different actions. Once in its main screen, the user can type '1', '2' or '3', to select which action the .exe must perform. Now, as many of these actio...
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JohnCalms

python

batch-file

exe

autohotkey

popen

Votes: 0

Answers: 1

Latest Answer

For AutoHotkey, if you have it installed open install dir and launch Window Spy then click on the text area or list you are typing 1, 2 or 3 in your .exe window then see if there is special class in f...
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Toorop

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