How To Install google-authenticator on Rocky Linux 8

In this tutorial we learn how to install google-authenticator on Rocky Linux 8. google-authenticator is One-time pass-code support using open standards

Introduction

In this tutorial we learn how to install google-authenticator on Rocky Linux 8.

What is `google-authenticator`

The Google Authenticator package contains a plug-able authentication module (PAM) which allows login using one-time pass-codes conforming to the open standards developed by the Initiative for Open Authentication (OATH) (which is unrelated to OAuth). Pass-code generators are available (separately) for several mobile platforms. These implementations support the HMAC-Based One-time Password (HOTP) algorithm specified in RFC 4226 and the Time-based One-time Password (TOTP) algorithm currently in draft.

We can use yum or dnf to install google-authenticator on Rocky Linux 8. In this tutorial we discuss both methods but you only need to choose one of method to install google-authenticator.

Install google-authenticator on Rocky Linux 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

After updating yum database, We can install google-authenticator using dnf by running the following command:

sudo dnf -y install google-authenticator

Install google-authenticator on Rocky Linux 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

After updating yum database, We can install google-authenticator using yum by running the following command:

sudo yum -y install google-authenticator

How To Uninstall google-authenticator on Rocky Linux 8

To uninstall only the google-authenticator package we can use the following command:

sudo dnf remove google-authenticator

google-authenticator Package Contents on Rocky Linux 8

/usr/bin/google-authenticator
/usr/lib/.build-id
/usr/lib/.build-id/28
/usr/lib/.build-id/28/19f17158d9ddef0a7f6135defe09c66b2b8061
/usr/lib/.build-id/70
/usr/lib/.build-id/70/03ef7a7d6793e0fcd5b4db22f580420272c34a
/usr/lib64/security/pam_google_authenticator.la
/usr/lib64/security/pam_google_authenticator.so
/usr/share/doc/google-authenticator
/usr/share/doc/google-authenticator/CONTRIBUTING.md
/usr/share/doc/google-authenticator/FILEFORMAT
/usr/share/doc/google-authenticator/README.md
/usr/share/doc/google-authenticator/totp.html
/usr/share/licenses/google-authenticator
/usr/share/licenses/google-authenticator/LICENSE
/usr/share/man/man1/google-authenticator.1.gz
/usr/share/man/man8/pam_google_authenticator.8.gz

References

google-authenticator website

Summary

In this tutorial we learn how to install google-authenticator on Rocky Linux 8 using yum and dnf.