Creating daemons in Linux is quite complex issue, but it’s very well documented in daemon(7) manual. Thankfully there is python-daemon module for Python 2 and 3 that implement PEP3143, so I’m using it. Here comes the question: when I was playing with python-daemon module I was surprised that daemon’s PPID is not 1. Why? Simple example: Content of test.log after
Tag: python
Getting console output in python string
I have a problem with getting some linux code output in python. I think it is because of escape characters The command I trying to run and i wanna replace that 192.168.1.* with a string variable like Every time i try getting error. Thanks for response! Answer i found the solution like this thanks anyway…
How to create a conda environment with specified libraires?
When creating a new conda environment, some packages are installed by default. I believe there is a way to specify the default libraries to install when creating a new environment without having to type all the names after the conda create command. Is there any file I can edit so as to specify which are the default libraries to install
Bash – How to run code whenever USB device is connected
I am writing a bash script to automatically detect when my USB keyboard is plugged into my laptop (running Ubuntu 14), so I can change the keyboard layout automatically. Here is my code so far (I got it from another post on Stack Overflow so I’m not 100% sure how it works) I have got this to run on startup
Scrapy FakeUserAgentError: Error occurred during getting browser
I use Scrapy FakeUserAgent and keep getting this error on my Linux Server. I keep getting this error on the Linux server when I run multiple spiders concurrently. This error rarely happens on my own laptop. What should I do to avoid that? Do I have to raise the RAM or something? The server’s spec is 512MB RAM and 1
Environment variables missing when executing via pkexec
If I execute print os.environ without pkexec I get lots of useful system environment variables, however, once I execute with, most of them are gone. How can I get them back with using pkexec? I understand there’s a workaround using sudo but haven’t found one yet for pkexec Answer In short, you can’t. From the pkexec man page: The environment
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)
How to speed up python scripts on OpenWrt (embedded Linux) (missing pyc)
On OpenWrt it is possible to run Python code (mini Python to be exact) but even a simple “Hello World” Python script takes 6-8 seconds to run. From my investigations it seams that all Python modules are kept in py source code, and are compiles in memory on each run. Due to being some 20 or more modules and that
Would it be wrong to store custom .py scripts in a personal Linux directory?
My end goal is simple: Store a set of .py scripts on my Linux system such that I can: Run them from the command line without using /Python [name] Edit them easily I can fix the first issue by storing the scripts in /usr/local/bin/ This causes the second issue, because now when I attempt to open the script for editing
pyravendb query parameters parsing error
I’ve noticed a weird parsing problem with ravendb’s python client. when i use this query knowing that url = “http://www.mywebsite.net/” The relevent part of the error stack is the following : BUT if I simply add a simple ‘ ‘ to the url parameter in the query, it works without any parsing error (but dosent returns a result though since