This is my program, and it works very well. Output: But if I want to run this program at startup as root in Linux Mint I have problems. I want to run this py file at startup as root but I don’t know how to do it. The main question is how to do it. This is my attempt to
Tag: subprocess
How can I execute two commands in terminal using Python’s subprocess module?
How can I use the subprocess module (i.e. call, check_call and Popen) to run more than one command? For instance, lets say I wanted to execute the ls command twice in quick sucession, the following syntax does not work returns: Answer You can use && or ;: The difference is that in case of && the second command will be
why does my ffmpeg process wait forever without stdin parameter to subprocess.run?
I am using the python subprocess module to call ffmpeg like this: This works fine. An example call: What I want to know is why it doesn’t work when I omit the stdin parameter. In this case the ffmpeg process waits forever iff I start my program as a background process in the shell. Running in the foreground works. I
How to run multiple linux commands as a sequence of arguments through subprocess.Popen Python
code-1 : Passing linux commands as a sequence of arguments Output – 1: In the above code I am trying to run multiple linux commands by passing them as a sequence of arguments. If I am modifying the above code to the following one it works fine. code-2 : Pass linux commands as a string Output – 2 : As
subprocess.call can not send stdout to ffmpeg
My code is python. It call espeak command to generate .wav audio. Then call ffmpeg to convert wav to mp3. But this command can not send stdout from espeak to ffmpeg via subprocess.call of python: The example: What is the mistake? How can I do? Answer The pipeline you wrote is handled by the shell, and won’t work (as written)
python subprocess module hangs for spark-submit command when writing STDOUT
I have a python script that is used to submit spark jobs using the spark-submit tool. I want to execute the command and write the output both to STDOUT and a logfile in real time. i’m using python 2.7 on a ubuntu server. This is what I have so far in my SubmitJob.py script The strange thing is, when I
Subprocess doesn’t respect arguments when using multiprocessing
The main objective here is to create a daemon-spawning function. The daemons need to run arbitrary programs (i.e. use subprocess). What I have so far in my daemonizer.py module is: When trying to run this in bash (This will create a file called test.log in your current directory.): It correctly spawns a daemon that launches ping but it doesn’t respect
Get the status of a python process that was executed in another terminal
I have a python program that will create and execute another python script in a new terminal. To do so, I’m using subprocess.Popen. I’m trying to get the PID of the new process using .pid. However, the value of this pid doesn’t seem to match the real pid of the newly created process (the two values don’t match). Here’s a
How to get one line from a print output in linux?
I’m trying to pull one line from a subprocess.check_output but so far I have no luck. I’m running a Python script and this is my code: and this is what I get back when I run the script: Now I want to get the 9th line (RMS amplitude) out of this list. I already tried something with sed but it
Redirected output from a subprocess call getting lost?
I have some Python code that goes roughly like this, using some libraries that you may or may not have: Basically, I’m starting a subprocess that’s supposed to go download some data for me and print it to standard out. I’m redirecting that data to a file, and then, as soon as the subprocess call returns, I’m closing my handle