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| Section | Objectives |
|---|---|
| Create and configure file systems | - NFS file systems - File permission troubleshooting - VFAT, ext4, and XFS file systems - Autofs - Extending logical volumes |
| Manage basic networking | - Hostname resolution - Network services at boot - IPv4 and IPv6 configuration - Firewall configuration with firewalld and firewall-cmd |
| Operate running systems | - Interrupt the boot process - Process scheduling - Tuning profiles - Network services - Secure file transfer - Boot, reboot, and shut down systems - System logs and journals - Boot systems into different targets - Process monitoring and termination |
| Create simple shell scripts | - Processing script inputs - Looping constructs - Processing command output - Conditional execution |
| Manage software | - Configure Flatpak repositories - Configure RPM repositories - Install and remove RPM packages - Install and remove Flatpak packages |
| Deploy, configure, and maintain systems | - Software installation and updates - Bootloader configuration - Service management - Default boot target configuration - Time service clients - Task scheduling with at, cron, and systemd timers |
| Manage users and groups | - Local group management - Local user account management - Privileged access configuration - Password and password aging management |
| Manage security | - Default file permissions - SELinux Boolean settings - SELinux file context restoration - SELinux enforcing and permissive modes - SELinux port labels - SELinux file and process contexts - Firewall configuration - SSH key-based authentication |
| Understand and use essential tools | - Shell access and command syntax - Creating and editing text files - Hard and soft links - Remote system access using SSH - File archiving and compression - Users and multi-user targets - File and directory management - System documentation - Text analysis with grep and regular expressions - File permissions - Input and output redirection |
| Configure local storage | - Physical volumes - Logical volumes - GPT disk partitions - Volume groups - Adding partitions, logical volumes, and swap - File system mounting using UUID or labels |
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NEW QUESTION # 33
Create Archive
Create a tar archive named /root/backup.tar.bz2, which should contain the contents of /usr/local. The tar archive must be compressed using bzip2.
Answer:
Explanation:
[root@node1 ~]# yum -y install bzip2
[root@node1 ~]# tar -jcvPf /root/backup.tar.bz2 /usr/local
# Verification
[root@node1 ~]# file /root/backup.tar.bz
NEW QUESTION # 34
Download ftp://192.168.0.254/pub/boot.iso to /root, and mounted automatically under /media/cdrom and which take effect automatically at boot-start.
Answer:
Explanation:
see explanation below.
Explanation
# cd /root; wget ftp://192.168.0.254/pub/boot.iso
# mkdir -p /media/cdrom
# vim /etc/fstab
/root/boot.iso /media/cdrom iso9660 defaults,loop 0 0
# mount -a
mount [-t vfstype] [-o options] device dir
NEW QUESTION # 35
Add a swap partition.
Adding an extra 500M swap partition to your system, this swap partition should mount automatically when the system starts up. Don't remove and modify the existing swap partitions on your system.
Answer:
Explanation:
fdisk -cu /dev/vda// in the way of expanding the partition, don't make main partition partx -a /dev/vda mkswap /dev/vdax swapon /dev/vdax swapon -s vi /etc/fstab
/dev/vdaxswapswapdefaults0 0
mount -a
NEW QUESTION # 36
Find String
Find all lines containing the string "ng" in the file /usr/share/xml/iso-codes/iso_639_3.xml.
Save copies of all these lines to /root/list in the root directory.
/root/list must not contain empty lines, and all lines must be exact copies of the original lines in /usr/share/xml/iso-codes/iso_639_3.xml.
Answer:
Explanation:
Solution:
[root@node1 ~]# grep ng /usr/share/xml/iso-codes/iso_639_3.xml
[root@node1 ~]# grep ng /usr/share/xml/iso-codes/iso_639_3.xml > /root/list
# Verification
[root@node1 ~]# cat /root/list
NEW QUESTION # 37
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 # 38
......
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