Today I Learned

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Today I Learned

Copy file from host machine to docker container

The docker cp utility copies the contents of SRC_PATH to the DEST_PATH. You can copy from the container’s file system to the local machine or the reverse, from the local filesystem to the container. If - is specified for either the SRC_PATH or DEST_PATH, you

How to load rake task from a custom file or directory

If you are wondering how you can load a rake task from a custom file, then this is guide will help you to accomplish your task. Lets assume you have a rake task named hello.rake under your project directory's lib folder like: <project>/lib/tasks/

How to install a specific package version in Alpine and Docker?

I was building a docker image for a backend API application that I was working on, so that my colleague, who is a front-end guy can easily setup the docker container and get it up and running. I chose Alpine Linux to build the Docker image bcos its light weight.

fizzbuzz in elixir using OTP and GenServer

Speaking of Erlang/Elixir the first thing that comes to mind is OTP. The erlang veterans would definitely playing around with it on a daily basis, but to the novice, it would sound a relatively strange term, and would be wondering what this is. So I thought of scribbling down

Some best practices while developing meteor.js apps

Recently I was working as a consultant for a meteor.js app, reviewing the entire codebase, and came across some of the common mistakes the developer makes when writing his/her first meteor.js app. Though some of them are trivial, some others can have bigger consequences on the security

Docker: Remove all images and containers

To delete all the containers we have created so far: docker rm $(docker ps -a -q) To delete all the images in docker: docker rmi $(docker images -q) NB: Deleting docker containers and images is not reversible. Make sure you know what you are upto. Ref: Docker Issue

Email notification when someone logs in via SSH

To setup email notification, login to your server as root. Edit .bashrc vim .bashrc add the following line at the end, changing "ServerName" to the host-name of your server and "me@til.codes" to your own email address. echo 'ALERT - Root Shell Access (Server-name)

How do I make --no-ri --no-rdoc the default for gem install?

If you are deploying to a server, or you do not want to wait around for rdoc and ri to install for each gem, you can disable them for gem installs and updates. Just add the following line to your ~/.gemrc or /etc/gemrc: gem: --no-rdoc --no-ri or gem: --no-document

How to update git remotes

To list the existing remotes, we can use the following command: git remote -v #View existing remotes origin https://github.com/user/repo.git (fetch) origin https://github.com/user/repo.git (push) Use the following command to set the remote to a new end point. git remote set-url origin

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