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| Section | Objectives |
|---|---|
| Create simple shell scripts | - Use looping constructs to process files and command-line input - Process script inputs - Conditionally execute code - Process output of shell commands within a script |
| Manage users and groups | - Change passwords and adjust password aging for local users - Configure privileged access - Create, delete, and modify local user accounts - Create, delete, and modify local groups and group memberships |
| Understand and use essential tools | - Access a shell prompt and issue commands with correct syntax - Access remote systems using SSH - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Create, delete, copy, and move files and directories - Create and edit text files - Create hard and soft links - Use grep and regular expressions to analyze text - Use input-output redirection - List, set, and change standard ugo/rwx permissions - Log in and switch users in multi-user targets - Locate, read, and use system documentation |
| Create and configure file systems | - Extend existing logical volumes - Mount and unmount network file systems using NFS - Diagnose and correct file permission problems - Create, mount, unmount, and use VFAT, ext4, and XFS file systems - Configure autofs |
| Deploy, configure, and maintain systems | - Install and update software packages - Configure time service clients - Start and stop services and configure services to start automatically at boot - Configure systems to boot into a specific target automatically - Modify the system bootloader - Schedule tasks using at, cron, and systemd timer units |
| Manage security | - Manage SELinux port labels - Configure key-based authentication for SSH - Set enforcing and permissive modes for SELinux - Restore default file contexts - List and identify SELinux file and process contexts - Configure firewall settings using firewall-cmd and firewalld - Manage default file permissions - Use Boolean settings to modify SELinux settings |
| Manage software | - Configure access to Flatpak repositories - Install and remove RPM software packages - Configure access to RPM repositories - Install and remove Flatpak software packages |
| Configure local storage | - Create and delete logical volumes - Add new partitions, logical volumes, and swap non-destructively - Configure systems to mount file systems at boot by UUID or label - List, create, and delete partitions on GPT disks - Assign physical volumes to volume groups - Create and remove physical volumes |
| Operate running systems | - Adjust process scheduling - Boot systems into different targets manually - Boot, reboot, and shut down a system normally - Interrupt the boot process to gain access to a system - Identify CPU and memory intensive processes and kill processes - Manage tuning profiles - Locate and interpret system log files and journals - Securely transfer files between systems - Preserve system journals - Start, stop, and check the status of network services |
| Manage basic networking | - Configure network services to start automatically at boot - Configure IPv4 and IPv6 addresses - Configure hostname resolution - Restrict network access using firewalld and firewall-cmd |
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NEW QUESTION # 46
Create User Account.
Create the following user, group and group membership:
Adminuser group
User natasha, using adminuser as a sub group
User Harry, also using adminuser as a sub group
User sarah, can not access the SHELL which is interactive in the system, and is not a member of adminuser, natasha,harry,sarah password is redhat.
Answer:
Explanation:
groupadd adminuser
useradd natasha -G adminuser
useradd haryy -G adminuser
useradd sarah -s /sbin/nologin
Passwd user name // to modify password or echo redhat | passwd --stdin user name id natasha // to view user group.
NEW QUESTION # 47
Part 1 (on Node1 Server)
Task 6 [Accessing Linux File Systems]
Find all lines in the file /usr/share/mime/packages/freedesktop.org.xml that contain the string ich.
Put a copy of these lines in the original order in the file /root/lines.
/root/lines should contain no empty lines and all lines must be exact copies of the original lines in
/usr/share/mime/packages/freedesktop.org.xml
Answer:
Explanation:
* [root@node1 ~]# cat /usr/share/mime/packages/freedesktop.org.xml | grep ich > /root/lines
[root@node1 ~]# cat /root/lines
<comment xml:lang="ast">Ficheru codificau en BinHex de Machintosh</comment>
<comment xml:lang="fr">fichier code Macintosh BinHex</comment>
<comment xml:lang="gl">ficheiro de Macintosh codificado con BinHex</comment>
<comment xml:lang="oc">fichier encodat Macintosh BinHex</comment>
<comment xml:lang="pt">ficheiro codificado em BinHex de Macintosh</comment>
<comment xml:lang="fr">fichier boite aux lettres</comment>
NEW QUESTION # 48
Add a new logical partition having size 100MB and create the data which will be the mount point for the new partition.
Answer:
Explanation:
1. Use fdisk /dev/hda-> To create new partition.
2. Type n ->For New partitions
3. It will ask for Logical or Primary Partitions. Press l for logical.
4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Keys
5. Type the size: +100M you can specify either Last cylinder of size here.
6. Press P to verify the partitions lists and remember the partitions name.
7. Press w to write on partitions table.
8. Either Reboot or use partprobe command.
9. Use mkfs -t ext3 /dev/hda?
OR
1. mke2fs -j /dev/hda? ->To create ext3 filesystem.
2. vi /etc/fstab
3. Write:
/dev/hda? /data ext3 defaults 0 0
4. Verify by mounting on current sessions also:
mount /dev/hda? /data
NEW QUESTION # 49
CORRECT TEXT
Configure autofs to make sure after login successfully, it has the home directory autofs, which is shared as /rhome/ldapuser40 at the ip: 172.24.40.10. and it also requires that, other ldap users can use the home directory normally.
Answer:
Explanation:
# chkconfig autofs on
# cd /etc/
# vim /etc/auto.master
/rhome /etc/auto.ldap
# cp auto.misc auto.ldap
# vim auto.ladp
ldapuser40 -rw,soft,intr 172.24.40.10:/rhome/ldapuser40
* -rw,soft,intr 172.16.40.10:/rhome/&
# service autofs stop
# server autofs start
# showmount -e 172.24.40.10
# su - ladpuser40
NEW QUESTION # 50
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
Answer:
Explanation:
see explanation below.
Explanation
groupadd admin
useradd -G admin mary
useradd -G admin alice
useradd -s /sbin/nologin bobby
echo "password" | passwd --stdin mary
echo "password" | passwd --stdin alice
echo "password" | passwd --stdin bobby
NEW QUESTION # 51
......
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