How To Install rubygem-pg on CentOS 8
Introduction
In this tutorial we learn how to install rubygem-pg on CentOS 8.
What is rubygem-pg
This is the extension library to access a PostgreSQL database from Ruby. This library works with PostgreSQL 9.1 and later.
We can use yum or dnf to install rubygem-pg on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install rubygem-pg.
Install rubygem-pg on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install rubygem-pg using dnf by running the following command:
sudo dnf -y install rubygem-pg
Install rubygem-pg on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install rubygem-pg using yum by running the following command:
sudo yum -y install rubygem-pg
How To Uninstall rubygem-pg on CentOS 8
To uninstall only the rubygem-pg package we can use the following command:
sudo dnf remove rubygem-pg
rubygem-pg Package Contents on CentOS 8
/usr/lib/.build-id
/usr/lib/.build-id/89
/usr/lib/.build-id/89/b1bebd864968ec6528a359f2294022ef94ebbf
/usr/lib64/gems/ruby/pg-1.0.0
/usr/lib64/gems/ruby/pg-1.0.0/gem.build_complete
/usr/lib64/gems/ruby/pg-1.0.0/pg_ext.so
/usr/share/gems/gems/pg-1.0.0
/usr/share/gems/gems/pg-1.0.0/BSDL
/usr/share/gems/gems/pg-1.0.0/LICENSE
/usr/share/gems/gems/pg-1.0.0/POSTGRES
/usr/share/gems/gems/pg-1.0.0/lib
/usr/share/gems/gems/pg-1.0.0/lib/pg
/usr/share/gems/gems/pg-1.0.0/lib/pg.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/basic_type_mapping.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/coder.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/connection.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/constants.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/exceptions.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/result.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/text_decoder.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/text_encoder.rb
/usr/share/gems/gems/pg-1.0.0/lib/pg/type_map_by_column.rb
/usr/share/gems/specifications/pg-1.0.0.gemspec
References
Summary
In this tutorial we learn how to install rubygem-pg on CentOS 8 using yum and dnf.