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| Section | Objectives |
|---|---|
| Create simple shell scripts | - Process script inputs - Use looping constructs to process files and command-line input - Process output of shell commands within a script - Conditionally execute code |
| Configure local storage | - Configure systems to mount file systems at boot by UUID or label - List, create, and delete partitions on GPT disks - Create and remove physical volumes - Create and delete logical volumes - Add new partitions, logical volumes, and swap non-destructively - Assign physical volumes to volume groups |
| Operate running systems | - Interrupt the boot process to gain access to a system - Start, stop, and check the status of network services - Locate and interpret system log files and journals - Adjust process scheduling - Securely transfer files between systems - Boot systems into different targets manually - Identify CPU and memory intensive processes and kill processes - Manage tuning profiles - Preserve system journals - Boot, reboot, and shut down a system normally |
| Understand and use essential tools | - Access a shell prompt and issue commands with correct syntax - Locate, read, and use system documentation - Use input-output redirection - Access remote systems using SSH - Log in and switch users in multi-user targets - List, set, and change standard ugo/rwx permissions - Use grep and regular expressions to analyze text - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Create and edit text files - Create hard and soft links - Create, delete, copy, and move files and directories |
| Deploy, configure, and maintain systems | - Modify the system bootloader - Configure systems to boot into a specific target automatically - Install and update software packages - Configure time service clients - Schedule tasks using at, cron, and systemd timer units - Start and stop services and configure services to start automatically at boot |
| Manage software | - Configure access to RPM repositories - Install and remove RPM software packages - Configure access to Flatpak repositories - Install and remove Flatpak software packages |
| Manage basic networking | - Configure network services to start automatically at boot - Configure hostname resolution - Restrict network access using firewalld and firewall-cmd - Configure IPv4 and IPv6 addresses |
| Manage security | - Configure firewall settings using firewall-cmd and firewalld - Configure key-based authentication for SSH - Use Boolean settings to modify SELinux settings - Manage SELinux port labels - Restore default file contexts - Manage default file permissions - Set enforcing and permissive modes for SELinux - List and identify SELinux file and process contexts |
| Manage users and groups | - Configure privileged access - Change passwords and adjust password aging for local users - Create, delete, and modify local user accounts - Create, delete, and modify local groups and group memberships |
| Create and configure file systems | - Create, mount, unmount, and use VFAT, ext4, and XFS file systems - Diagnose and correct file permission problems - Extend existing logical volumes - Configure autofs - Mount and unmount network file systems using NFS |
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NEW QUESTION # 63
Pull the registry.access.redhat.com/ubi10/ubi image and run a rootless container named webtest that executes
sleep 3600.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
podman pull registry.access.redhat.com/ubi10/ubi
podman run -d --name webtest registry.access.redhat.com/ubi10/ubi sleep 3600
podman ps
Detailed Explanation:
* podman pull downloads the image.
* podman run -d starts the container in the background.
* Rootless Podman is a normal RHEL container workflow.
* RHEL 10 container documentation continues to center on Podman for image and container
management. ( Red Hat Documentation )
NEW QUESTION # 64
Search files.
Find out files owned by jack, and copy them to directory /root/findresults
Answer:
Explanation:
mkdir/root/findfiles
find / -user jack -exec cp -a {} /root/findfiles/ \; ls /root/findresults
NEW QUESTION # 65
Find Files
Find all files belonging to the user "jacques" and move them to the directory /root/findfiles under the root directory.
Answer:
Explanation:
[root@node1 ~]# mkdir /root/findfiles
[root@node1 ~]# find / -user jacques
[root@node1 ~]# find / -user jacques -exec cp -a {} /root/findfiles \;
# Verification
[root@node1 ~]# ll /root/findfiles/
NEW QUESTION # 66
Configure a task: plan to run echo hello command at 14:23 every day.
Answer:
Explanation:
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)
NEW QUESTION # 67
Build a Podman image, enable lingering for user alex, generate a systemd unit for a user container, and enable it.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
podman build -t myimage -f Containerfile .
loginctl enable-linger alex
cd ~/.config/systemd/user/
podman generate systemd --name mycontainer --files --new
systemctl --user daemon-reload
systemctl --user enable --now container-mycontainer.service
Detailed Explanation:
* podman build creates the container image.
* loginctl enable-linger alex allows user services to keep running without an active login session.
* podman generate systemd creates a systemd unit file for the container.
* systemctl --user manages the unit in the user session scope.
* On newer Podman releases, behavior and defaults have changed in RHEL 10, but the lab's workflow is
still conceptually valid.
NEW QUESTION # 68
......
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