In your code it should be proc1.kill() Both kill or terminate are methods of the Popen object. On macOS and Linux, kill sends the signal signal.SIGKILL to the process and terminate sends signal.SIGTERM. On Windows they both call Windows’ TerminateProcess() function.
subprocess.Popen takes a cwd argument to set the Current Working Directory; you’ll also want to escape your backslashes (‘d:\\test\\local’), or use r’d:\test\local’ so that the backslashes aren’t interpreted as escape sequences by Python. The way you have it written, the \t part will be translated to a tab. So, your new line should look like: … Read more
You need to set the startupinfo parameter when calling Popen. Here’s an example from an Activestate.com Recipe: import subprocess def launchWithoutConsole(command, args): “””Launches ‘command’ windowless and waits until finished””” startupinfo = subprocess.STARTUPINFO() startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW return subprocess.Popen([command] + args, startupinfo=startupinfo).wait() if __name__ == “__main__”: # test with “pythonw.exe” launchWithoutConsole(“d:\\bin\\gzip.exe”, [“-d”, “myfile.gz”])
Relative paths (paths containing slashes) never get checked in any PATH, no matter what you do. They are relative to the current working directory only. If you need to resolve relative paths, you will have to search through the PATH manually. If you want to run a program relative to the location of the Python … Read more
There are two ways to do the redirect. Both apply to either subprocess.Popen or subprocess.call. Set the keyword argument shell = True or executable = /path/to/the/shell and specify the command just as you have it there. Since you’re just redirecting the output to a file, set the keyword argument stdout = an_open_writeable_file_object where the object … Read more
popen gives you a file handle on a process’ stdout, not its stderr. Its first argument is interpreted as a shell command, so you can do redirections in it: FILE *p = popen(“prog 2>&1”, “r”); or, if you don’t want the stdout at all, FILE *p = popen(“prog 2>&1 >/dev/null”, “r”); (Any other file besides … Read more
Your interpreter is buffering. Add a call to sys.stdout.flush() after your print statement.
Here is verified example for Python REPL: >>> import subprocess >>> import sys >>> p = subprocess.Popen([sys.executable, ‘-c’, ‘import time; time.sleep(100)’], stdout=subprocess.PIPE, stderr=subprocess.STDOUT); print(‘finished’) finished How to verify that via another terminal window: $ ps aux | grep python Output: user 32820 0.0 0.0 2447684 3972 s003 S+ 10:11PM 0:00.01 /Users/user/venv/bin/python -c import time; time.sleep(100)
I’d suggest writing your own function to do the piping/forking/system-ing for you. You could have the function spawn a process and return read/write file descriptors, as in… typedef void pfunc_t (int rfd, int wfd); pid_t pcreate(int fds[2], pfunc_t pfunc) { /* Spawn a process from pfunc, returning it’s pid. The fds array passed will * … Read more
Why aren’t you using pipe/fork/exec method? pid_t pid = 0; int pipefd[2]; FILE* output; char line[256]; int status; pipe(pipefd); //create a pipe pid = fork(); //span a child process if (pid == 0) { // Child. Let’s redirect its standard output to our pipe and replace process with tail close(pipefd[0]); dup2(pipefd[1], STDOUT_FILENO); dup2(pipefd[1], STDERR_FILENO); execl(“/usr/bin/tail”, … Read more