Custom exam practise:

1. Basic Foundations

Essential Tools

• Access a shell prompt and issue commands with correct syntax.

• Create and edit text files.

• Create, delete, copy, and move files and directories.

• Locate, read, and use system documentation (man, info, /usr/share/doc).

• Use input-output redirection (>, >>, |, 2>, etc.).

• Use grep and regular expressions to analyze text.

Manage Users and Groups

• Create, delete, and modify local user accounts.

• Change passwords and adjust password aging for local user accounts.

• Create, delete, and modify local groups and group memberships.

• Configure superuser access.

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2. Intermediate Foundations

File Permissions and Links

• List, set, and change standard ugo/rwx permissions.

• Create hard and soft links.

• Manage default file permissions.

• Diagnose and correct file permission problems.

Shell Scripting

• Create simple shell scripts.

• Conditionally execute code (if, test, []).

• Use looping constructs (for, etc.) to process input.

• Process script inputs ($1, $2, etc.).

• Process output of shell commands within a script.

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3. Managing the System

Operate Running Systems

• Boot, reboot, and shut down a system normally.

• Boot systems into different targets manually.

• Interrupt the boot process to gain system access.

• Identify CPU/memory-intensive processes and kill processes.

• Adjust process scheduling.

• Manage tuning profiles.

• Locate and interpret system log files and journals.

• Preserve system journals.

• Start, stop, and check the status of network services.

Scheduling Tasks

• Schedule tasks using at and cron.

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4. Networking

Manage Basic Networking

• Configure IPv4 and IPv6 addresses.

• Configure hostname resolution.

• Configure network services to start automatically at boot.

• Restrict network access using firewall-cmd.

Remote Access and File Transfers

• Access remote systems using SSH.

• Securely transfer files between systems.

• Configure key-based authentication for SSH.

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5. Storage Management

Local Storage

• List, create, delete partitions on MBR and GPT disks.

• Create and remove physical volumes.

• Assign physical volumes to volume groups.

• Create and delete logical volumes.

• Add new partitions, logical volumes, and swap to a system non-destructively.

File Systems

• Create, mount, unmount, and use vfat, ext4, and xfs file systems.

• Configure systems to mount file systems at boot by UUID or label.

• Extend existing logical volumes.

• Mount and unmount network file systems using NFS.

• Configure autofs.

• Create and configure set-GID directories for collaboration.

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6. System Maintenance

Deploy, Configure, and Maintain Systems

• Start and stop services and configure them to start automatically at boot.

• Configure systems to boot into a specific target automatically.

• Configure time service clients.

• Install and update software packages (RHN, remote repository, or local).

• Modify the system bootloader.

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7. Security

SELinux

• Set enforcing and permissive modes for SELinux.

• List and identify SELinux file and process context.

• Restore default file contexts.

• Manage SELinux port labels.

• Use boolean settings to modify SELinux.

• Diagnose and address routine SELinux policy violations.

Firewall

• Configure firewall settings using firewall-cmd.

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8. Containers

Container Management

• Find and retrieve container images from a remote registry.

• Inspect container images.

• Perform basic container management (run, start, stop, and list containers).

• Run a service inside a container.

• Configure a container to start automatically as a systemd service.

• Attach persistent storage to a container.