authconfig:tldr:f4e06

The command "authconfig --test" is used to test and display the current authentication configuration settings on a Linux system. This command is typically executed with root privileges.

When this command is run, it performs a check on the authentication configuration files present on the system, such as /etc/nsswitch.conf, /etc/pam.d/*, and /etc/ldap.conf. It verifies the settings and provides a report on the status of various authentication methods and services.

The output of the "authconfig --test" command includes information about the authentication methods being used, such as user/password authentication, LDAP (Lightweight Directory Access Protocol) configuration, Kerberos configuration, and more. It also displays the current configuration options set for each authentication method.

The purpose of using this command is to quickly view the current authentication settings configured on the system and check if they are properly set up as intended. It facilitates troubleshooting authentication-related issues, allows administrators to confirm the presence of necessary configuration files, and ensures that the system is using the desired authentication mechanisms.