Using Ruby properly in Linux with RVM

RVM is a virtual env manager in ruby. This kind of solution is very common currently. In Python and Go we have similar solutions for instance. This is needed because sometimes libraries have different version and conflicts and this makes the process way easier to deal with.

Today as you go down to the isolation and container era you tend to have better separation between development, test and production envs  but even with that is easier to manage dependencies using this kind of systems.

For this blog post i will show how to download, install and configure rvm and install a ruby version on it for Ubuntu Linux.

Installing RVM in Ubuntu Linux

Install RVM

gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
curl -sSL https://get.rvm.io | bash
source ~/.rvm/scripts/rvm
type rvm | head -n 1
echo "source $HOME/.rvm/scripts/rvm" >> ~/.bash_profile

Install Ruby

rvm install 2.1
rvm use 2.1
ruby -v
rvm use 2.1 --default

Ruby 2.4.4

source ~/.rvm/scripts/rvm
rvm install 2.4.4
rvm use 2.4.4
rvm use 2.4.4 default
gem install bundler
view raw rvm.md hosted with ❤ by GitHub
Have fun.

Cheers,
Diego Pacheco

Popular posts from this blog

Having fun with Zig Language

Image
Zig is a general-purpose language created in 2016 by Andrew Kelly .  Zig aims to fix the issues C language has while being pragmatic and simple at the same time. Zig really shines as being simple by not having any hidden control flows, not having hidden memory allocations, no pre-processors, and no macros. Basically, it's one language and one language only. Since pre-processors and macros can get really complex and become their own universe. Sure it's not the Zig Philosophy.  Zig Compiler(Zig cc) also is a C compiler, and the interoperability from C to Zig is very good. Clearly, we can see influence from other languages like Go and Rust; however, Zig is pretty unique and different from Go and Rust.  Zig is fast. Zig is perfect for system programming. I bet we will see a lot of solutions being built in Zig. As a languages aficionado, I like to learn at least one language per year and sometimes more; Zig was my 2021 pick, did not regret it. Even if you dont use all language...
Keep reading

C Unit Testing with Check

Image
When I start on IT, several years ago(+15), C was the first language that I learned. But was not the first language I mastered and deployed in production which was...surprisingly Visual Basic 6.0. However, when I learned C or any language back on that old and arcane time noddy was into testing. However now is impossible to work professionally in any language without tests. C is a low-level language but still kicks ass and has several interesting libs/frameworks. People use to fear C a lot because of lack of syntactical sugar but once you get used to it is not that hard at all. Today I want to show how you can do Unit Testing with C. I will not show how to do Unit Testing with C++ but with C ANSI actually. We will be using Check a unit test lib for C ANSI.
read more »

Cool Retro Terminal

Image
I often don't blog about this kind of stuff. Yesterday I friend of mine showed me this awesome project called  cool-retro-term . When you work with Cloud Computing and DevOps Engineering you spend lots of time on the black screen testing things on the cloud.  When I saw this project I got very excited because it brings some nostalgy back to my life. To be 100% clearI'm not that old as my friend :-) However I share his joy into this retro terminals. This also reminds me some old games like Fallout 1 . I just this is pure fun so I'm sharing here with you guys some screenshots and also how to run on Gnome Ubuntu 17.04.
read more »