Author: abhijit

Share current directory using Ruby, Node, PHP, Python

March 3, 2023 / abhijit

Sometimes, we need to share some files quickly on the network for our colleagues or family.

Of course, we can set up Nginx, or something else. But to this quickly and easily, and mostly, only temporarily, we can do this using many different languages quite easily.

Art is not what I think when I’m painting. It’s what you feel when you’re looking.
Prof. Fabian Hemmert

upgrading bitwarden / vaultwarden

January 20, 2023 / abhijit

I had posted earlier about running Vaultwarden (a Bitwarden server in Rust). This has been running amazingly all this time.

But today, when I tried to log in from the browser extension, I kept getting an error.

Searching in the forum, I found the issue – I had to update the Vaultwarden server.

Since I was running Vaultwarden as a Docker container, and I had run the docker command directly, so I decided to create a docker-compose.yml file instead this time.

Nginx – folders as subdomains

December 31, 2022 / abhijit

I have a projects folder in which I put multiple folders, each having an html page.

So, the folder hierarchy looks something like this –

projects

|-sampleproject1

|-index.html

|-style.css

|-sampleproject2

|-index.html

|-style.css

projects
|-sampleproject1
  |-index.html
  |-style.css
|-sampleproject2
  |-index.html
  |-style.css

I want to have each of these folders as subdomains to my domain, so I had to create an nginx conf file for each one with a different root path.

I was looking for way to have this done automatically using Nginx and finally found it!

Everything you’ve ever wanted is on the other side of fear.
George Addair

error – sudo without being in the sudo group?

August 30, 2022 / abhijit

This was quite a head-scratcher. I wanted to remove a user sammy from the sudo group and did that by running this as root

root> deluser sammy sudo

root> deluser sammy sudo

However, when I logged in as sammy I was still able to run –

sammy> sudo su

sammy> sudo su

Checking which groups the user belonged to was of no help either.

sammy> groups

sammy

sammy> groups sammy

sammy> groups
sammy

When in doubt, choose the adventure.
Friedrich Nietzche

Postgres pg_dump without password

August 26, 2022 / abhijit

I have to do a dump of a Postgres database on a regular basis.

So pg_dump is the obvious choice to do this as is cron to do this periodically.

But the main problem with this is – pg_dump expects a password to be entered at the prompt. There’s no way to pass the password in the prompt to be able to do this.

Stackoverflow to the rescue.

What is required is a .pgpass file in the home directory.

‘asdf’ not finding program

August 26, 2022 / abhijit

I discovered asdf quite late! I was relying on a bunch of different programs to manage Ruby (rvm), Node (nvm).

asdf was an amazing headache saver. It already has core plugins for Elixir, Erlang, Node and Ruby. Plus, it has community plugins for what seems like practically anything under the sun.

I had installed asdf on a new system. And as usual, there were some crons to run on it. I kept getting a /bin/bash/ruby not found error.

After some time I realized I had faced this problem before as well!

Connect to server running on host from inside a Docker container

August 4, 2022 / abhijit

After installing the CloudBeaver as a Docker instance, I was trying to connect to the Postgres instance which I was running on my local machine.

In the HOST field, I tried with localhost which obviously wouldn’t work since that refers to the VM itself.

After some searching I found that to connect to the host, I need to set the connection as

host.docker.internal

host.docker.internal