Explain the purpose of open source, Linux, Linux distributions, and Red Hat Enterprise Linux.

Log in to a Linux system and run simple commands from the shell.

Log in to the Linux system with the GNOME desktop environment to run commands from a shell prompt in a terminal program.

Save time when running commands from a shell prompt with Bash shortcuts.

Describe how Linux organizes files, and the purposes of various directories in the file-system hierarchy.

Specify the absolute location and relative location of files to the current working directory, determine and change the working directory, and list the contents of directories.

Create, copy, move, and remove files and directories.

Create multiple file name references to the same file with hard links and symbolic (or "soft") links.

Efficiently run commands that affect many files by using pattern matching features of the Bash shell.

Find information in local Linux system manual pages.

Save output or errors to a file with shell redirection, and process command output through multiple command-line programs with pipes.

Create and edit text files from the command line with the vim editor.

Set shell variables to run commands, and edit Bash startup scripts to set shell and environment variables to modify the behavior of the shell and programs that are run from the shell.

Describe the purpose of users and groups on a Linux system.

Switch to the superuser account to manage a Linux system, and grant other users superuser access through the sudo command.

Create, manage, and delete local user accounts.

Create, modify, and delete local group accounts.

Set a password management policy for users, and manually lock and unlock user accounts.

List file-system permissions on files and directories, and interpret the effects of those permissions on access by users and groups.

Change the permissions and ownership of files with command-line tools.

Control the default permissions of user-created files, explain the effects of special permissions, and use special and default permissions to set the group owner of files that are created in a directory.

Determine status, resource use, and ownership of running programs on a system, to control them.

Use Bash job control to manage multiple processes that were started from the same terminal session.

Use commands to kill and communicate with processes, define the characteristics of a daemon process, and stop user sessions and processes.

Define load average and determine resource-intensive server processes.

List system daemons and network services that the systemd service and socket units started.

Control system daemons and network services with the systemctl command.

Log in to a remote system and run commands with ssh.

Configure a user account to use key-based authentication to log in to remote systems securely without a password.

Disable direct logins as root and password-based authentication for the OpenSSH service.

Describe fundamental concepts of network addressing and routing for a server.

Test and inspect the current network configuration with command-line utilities.

Manage network settings and devices with the nmcli command.

Modify network configuration by editing configuration files.

Configure a server's static hostname and its name resolution and test the results.

Register a system by using your Red Hat account and assign it entitlements for software updates and support services provided by Red Hat.

Explain how software is provided as RPM packages, and investigate the DNF and RPM installed system packages.

Find, install, and update software packages with the dnf command.

Enable and disable server use of Red Hat or third-party DNF repositories.

Identify a directory in the file-system hierarchy and the device where it is stored.

Access the contents of file systems by adding and removing file systems in the file-system hierarchy.

Search for files on mounted file systems with the find and locate commands.

Activate the web console management interface to remotely manage and monitor the performance of a Red Hat Enterprise Linux server.

Describe and use the Red Hat Customer Portal key resources to find information from Red Hat documentation and the Knowledgebase.

Use Red Hat Insights to analyze servers for issues, remediate or resolve them, and confirm that the solution worked.