Okay, so I’m just trying to install ruby. Totally uninstalled it yesterday - or so I thought.
Attached is a screenshot of my exact problem. As you can see, there is no path to the ruby executable yet when I go to install ruby, it says that ruby is already installed.
I have no idea what to do next. I’ve been stuck on this problem for quite a few hours now…
Ah okay! I got it. I had to run the following command first:
$ sudo yum remove ruby-2.4.4-88.fc26.x86_64
Got the hint from this source: https://docs.fedoraproject.org/en-US/Fedora/18/html/System_Administrators_Guide/sec-Removing.html
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That’s very weird. How did you uninstall it in the first place?
From the looks of it, /usr/bin/ruby-mri is what you are looking for, and this is provided in the rubypick-mri package. /usr/bin/ruby, on the otherhand, is from the rubypick package as it tells you. This is a wrapper that lets one choose a ruby implementation from the looks of it:
$ sudo dnf info rubypick
Last metadata expiration check: 0:38:09 ago on Thu 16 May 2019 17:32:11 BST.
Installed Packages
Name : rubypick
Version : 1.1.1
Release : 10.fc30
Architecture : noarch
Size : 4.4 k
Source : rubypick-1.1.1-10.fc30.src.rpm
Repository : @System
From repo : fedora
Summary : Stub to allow choosing Ruby runtime
URL : https://github.com/bkabrda/rubypick
License : MIT
Description : Fedora /usr/bin/ruby stub to allow choosing Ruby runtime. Similarly to rbenv
: or RVM, it allows non-privileged user to choose which is preferred Ruby
: runtime for current task.
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I’m not sure why that works. Another note: current Fedora releases now use dnf. yum is deprecated—it simply calls dnf.
More information here: https://fedoraproject.org/wiki/DNF
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.- Interactive Ruby (irb), Install it by default like python3 does
type in terminal
irb # you can play with ruby command in it
to exit type → quit/exit
Also you’re in an EOL release and 
not provide update that mean that you can have security issues… I sugest upgrade to a newer release
https://docs.fedoraproject.org/en-US/quick-docs/dnf-system-upgrade/
Regards.,
2 Likes
Ah, to be honest, I’m not 100% sure since it was a few days ago but I’m pretty sure all I did was just delete the ruby and rails executable from my /usr/bin/ folder.
Interesting, I kept wondering what the /usr/bin/ruby-mri was - thank you for the information.
I ended up re-installing ruby shortly after solving my problem yesterday and now it runs just fine.
I have an older version of Fedora, Fedora-26 so that could be why yum still works - though I use dnf too.
Alright, thank you for the insight.