Starting rails server on a particular port on Debian boot [closed] - ruby-on-rails

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Closed 9 years ago.
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This isn't exactly a production deployment of rails, or I'd go the standard Passenger route - I simply want it to start on port 3003 and sit there.
I'm running the following .sh script from rc.local
source /usr/local/rvm/scripts/rvm
/usr/local/rvm/rubies/ruby-2.0.0-p247/bin/ruby /root/rails_app/script/rails server -d --port 3003
I seem to recall the first line is required by rvm to enable ruby\rails commands in the shell. Unfortunately, this doesn't seem to do the trick.
I'm having a hard time diagnosing the issue.
Is there a way to see the error log of scripts that are executed via rc.local?

you can not source RVM in sh shell, you need to use a wrapper:
/usr/local/rvm/wrappers/ruby-2.0.0-p247/ruby \
/root/rails_app/script/rails server -d --port 3003
you can find more information about it here - http://rvm.io/integration/init-d

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How do I delete Airflow from Windows 11 [closed]

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Closed 7 months ago.
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I installed Airflow with Docker on Windows 11 a while back. There is no Airflow folder in both of the Programs directories on my laptop.
I used a Revo Uninstaller to uninstall the program. This is apparently supposed to uninstall it through the logs.
I have an "airflow-docker" file on my Desktop with the dags,logs and plugins folders and the docker-compose yaml file.
How do I ensure the uninstalling has been successful?
Docker doesn't install the software within the container on your host. If your docker-compose.yml has volumes defined, then those are just files, not "installed", and you can remove them, if you want.

How to install spyder3 on ubuntu 16.04 docker container [closed]

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Closed 3 years ago.
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I am trying to build an docker image based on Ubuntu 16.04. Is it possible to install and use spyder3 on this image?
What I have done so far...
Added a normal user on Ubuntu 16.04(base image)
Installed python3.6.4
Installed spyder3
and I get this error:
genie#667b3f2734a1:~$ spyder3
Spyder: cannot connect to X server :0.0
Any assistance would be much appreciated :)
(Spyder maintainer here) Spyder is a desktop application, so it needs an X server running on Linux for it to work. So you need to add python3-pyqt5 to your docker image, which should bring Xorg and all its dependencies with it. Then you need to start the server with startx.

How can I Install oh-my-zsh [closed]

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Closed 8 months ago.
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Can I ask some help how can install this in windows 10 oh-my-zsh
Are there any prerequisite on this?
Another way to use oh-my-zsh is to use linux based OS on WSL2.
If you download Ubuntu or Linux based Operating system in windows 10/11 WSL2. Then you can use any terminal app that can be run on Linux. So this is also an way to install zsh with oh-my-zsh.
If you want something similar as oh-my-zsh for Powershell you can try oh-my-posh.
Windows does not have bash or zsh but I will still try to answer your question. This is nearly impossible to do something like installing oh-my-zsh without terminal utility. But I found Babun which is mostly similar to that. It has a pre-configured cygwin and integrated oh-my-zsh. So you may get your hands dirty with that.

How to enable rails and postgresql on start up in centos [closed]

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Closed 8 years ago.
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I have a server with centos running rails application each time when I reboot my system I have doing following tasks manually. How to enable all the following tasks in start up
To stop and start my nginx I am using
sudo fuser -k 80/tcp # to stop
sudo /opt/nginx/sbin/nginx # to start
And to start my postgresql I am using following command
service postgresql-9.2 start/stop/restart
Once I connect my server using ssh and try some postgresql command ill get error as
postgresql-9.2: unrecognized service
To avoid this am using command
export PATH=/usr/pgsql-9.2/bin:$PATH
And then ill use postgresql(Doing export command each time when I connect through ssh).
And I am using ghost blog facing same issue whenever I reboot my server I need to run following command to start my ghost blog
NODE_ENV=production forever start index.js
How to solve all these. Can any one help
You can add the process in your init script that is at /etc/init.d/
.You can further read run script on startup

I can't change or add anything, sudo not working...sudo: can't open /etc/sudoers: Permission denied [closed]

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Closed 9 years ago.
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I'm trying to install Ruby on Rails and I was using SSH to login to the linux machine, when I started working, everything was fine and I'm sure there was a mistake I made where the file/directory permissions changed.
Now when I try to send a command like:
sudo apt-get install rubygems
I get this error:
sudo: can't open /etc/sudoers: Permission denied
Not sure what to do next, what options do I have. I can login as root user as well but I don't want to dig a deeper hole for myself.
The linux machine is running on Ubuntu 10.04.
Try this:
chmod -R 0440 /etc/sudoers.d
may be you changed the permissions by mistake.
Have you checked whether the file /etc/sudoers exists or whether the permissions have changes ?
This question may be better suited to the Linux/Ubuntu (or whatever flavour of Linux you have).
See: https://stackoverflow.com/questions/tagged/ubuntu

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