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| Section | Objectives |
|---|---|
| Topic 1: Manage users and groups | - Change passwords and adjust password aging for local users - Create, delete, and modify local groups and group memberships - Configure privileged access - Create, delete, and modify local user accounts |
| Topic 2: Create and configure file systems | - Mount and unmount network file systems using NFS - Diagnose and correct file permission problems - Configure autofs - Extend existing logical volumes - Create, mount, unmount, and use VFAT, ext4, and XFS file systems |
| Topic 3: Deploy, configure, and maintain systems | - Modify the system bootloader - Schedule tasks using at, cron, and systemd timer units - Install and update software packages - Start and stop services and configure services to start automatically at boot - Configure time service clients - Configure systems to boot into a specific target automatically |
| Topic 4: Create simple shell scripts | - Use looping constructs to process files and command-line input - Process output of shell commands within a script - Conditionally execute code - Process script inputs |
| Topic 5: Understand and use essential tools | - Create hard and soft links - Create and edit text files - List, set, and change standard ugo/rwx permissions - Create, delete, copy, and move files and directories - Access remote systems using SSH - Use grep and regular expressions to analyze text - Locate, read, and use system documentation - Use input-output redirection - Access a shell prompt and issue commands with correct syntax - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Log in and switch users in multi-user targets |
| Topic 6: Manage basic networking | - Configure network services to start automatically at boot - Restrict network access using firewalld and firewall-cmd - Configure IPv4 and IPv6 addresses - Configure hostname resolution |
| Topic 7: Operate running systems | - Preserve system journals - Adjust process scheduling - Securely transfer files between systems - Boot systems into different targets manually - Interrupt the boot process to gain access to a system - Manage tuning profiles - Boot, reboot, and shut down a system normally - Start, stop, and check the status of network services - Identify CPU and memory intensive processes and kill processes - Locate and interpret system log files and journals |
| Topic 8: Manage software | - Configure access to Flatpak repositories - Install and remove RPM software packages - Install and remove Flatpak software packages - Configure access to RPM repositories |
| Topic 9: Manage security | - Use Boolean settings to modify SELinux settings - Manage default file permissions - Restore default file contexts - Set enforcing and permissive modes for SELinux - Manage SELinux port labels - Configure key-based authentication for SSH - List and identify SELinux file and process contexts - Configure firewall settings using firewall-cmd and firewalld |
| Topic 10: Configure local storage | - List, create, and delete partitions on GPT disks - Configure systems to mount file systems at boot by UUID or label - Add new partitions, logical volumes, and swap non-destructively - Create and delete logical volumes - Assign physical volumes to volume groups - Create and remove physical volumes |
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NEW QUESTION # 23
Please open the ip_forward, and take effect permanently.
Answer:
Explanation:
see explanation below.
Explanation
* vim /etc/sysctl.conf net.ipv4.ip_forward = 1
* sysctl -w (takes effect immediately)
If no "sysctl.conf" option, use these commands:
* sysctl -a |grep net.ipv4
* sysctl -P net.ipv4.ip_forward = 1
* sysctl -w
NEW QUESTION # 24
Set cronjob for user natasha to do /bin/echo hiya at 14:23.
Answer:
Explanation:
see explanation below.
Explanation
# crontab -e -u natasha
23 14 * * * /bin/echo hiya
wq!
NEW QUESTION # 25
Configure Apache to serve content from /webdata on port 8080, allow the port in SELinux, and open it in the firewall.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
dnf install -y httpd policycoreutils-python-utils
mkdir -p /webdata
echo "RHEL10 Web Server" > /webdata/index.html
sed -i 's/
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