start-stop-daemon | Easily transform a JS script into a start-stop-daemon script

for a while now I am trying to install Spamassassin properly as root user with 'apt install spamassassin spamc'. The installation fails when it runs sa-compile producing following output:

We have unit tests that require rospy (One of the test uses geometry_msgs/Twist).

When we run the unit tests locally, everything is fine.

What is the difference in running a process in background using start-stop-daemon with --background option and using with &?Which option is best and why?

I am setting up VPS for the first time on upcloud. I am using unicorn 5.5.5 with Nginx. Rails 4.2.8 and ruby 2.4.2. My Nginx service runs fine. Doesn't show any error. Whenever I start unicorn service I get this error. I followed this tutorial.

https://medium.com/@manishyadavv/how-to-deploy-ruby-on-rails-apps-on-aws-ec2-7ce55bb955fa

How can I redirect https from one domain to https of another?

I own three domains that is directed to the same ip/website in the NS server:

1. example1.com
2. example2.com
3. example3.com

I paid only for one SSL licence that initially was issued for the first domain, so when I bought the second domain, I redirected all traffic to https://example1.com

Lately, I wanted to redirect all calls to a new domain: https://example3.com. I reissued the old SSL licence for the new domain and installed it successfully. The last part is redirecting all traffic to the new domain.

Now, all traffic from http is redirect well, but https (https://example1.com and https://example2.com) is not directed at all, and results in working "Not secure" page.

When I try to listen to 443 SSL and redirect if from 1&2 name servers to the third one and run service nginx restart, I get:

Description

• I have built my Django3, gunicorn, nginx, Ubuntu 18.04, Digital Ocean project based on this guide. I only had 1 problem that it does not shows the CSS and all other static files like images. Before during the whole guide nginx have given the correct answers as the guide says and also currently the html site still online and running
• To solve this I was in the process of using this another guide to make my static files displayed on my site. I have done all the steps what the creator recommended but at the

What I have tried

• After each step of the following [1.2.3...] commands I have executed the following commands to refresh:

  • python3 manage.py collectstatic
  • sudo nginx -t && sudo systemctl restart nginx
  • sudo systemctl restart gunicorn

• 1.RUN: sudo ln -s /etc/nginx/sites-available/ch-project /etc/nginx/sites-enabled

• 1.RESULT: ln: failed to create symbolic link '/etc/nginx/sites-enabled/ch-project': File exists

• 2.RUN: /etc/nginx/sites-enabled/my-project

• 2.RESULT: -bash: /etc/nginx/sites-enabled/my-project: Permission denied

• 3.RUN: systemctl status nginx.service

• 3.RESULT:

I'm working through https://www.digitalocean.com/community/tutorials/how-to-serve-django-applications-with-uwsgi-and-nginx-on-ubuntu-16-04. I've completed the tut but I'm getting a 502 error.

My nginx server block configuration file:

I'm trying to write a script that will mostly stay idle waiting for a predefined amount of time using regular system sleep. The problem emerges when I try to kill it externally (with start-stop-daemon for example). The main process will be killed, but the child sleep will remain in the system until it will run out. I decided to make a sanity trap and kill active sleep from the script itself. This is how it is done:

I try to create an integration test for an graphical user interface (GUI) written with Qt5 through python3 (so using pyqt5). And I use pytest with the plugging pytest-qt to test the GUI.

I test the GUI which here is largely inspired from this question, so the command pytest -v -s runs well.

Since my repository is on Github, I use Travis-CI to perform my integration tests.

However when I push on Github and so I launch the Travis tests I get at some point the following error: