IBM Linux Administrator Interview Questions, Process, and Tips

ACL stands for Access Control List, a set of permissions attached to an object that specifies which users or system processes are granted access to that object.

• ACLs are used to control access to files, directories, and other resources on a system.

• They define who can read, write, or execute a file or directory.

• ACLs can be set on a per-user or per-group basis, allowing for more granular control over access permissions.

• Ex...read more

LVM (Logical Volume Manager) is a tool used in Linux to manage storage by creating logical volumes from physical volumes.

• LVM allows for dynamic resizing of logical volumes without downtime.

• It provides features like snapshots, striping, mirroring, and thin provisioning.

• Physical volumes are divided into extents, which can be allocated to logical volumes.

• Commands like pvcreate, vgcreate, lvcreate are used to create physic...read more

The Linux kernel is the core component of the Linux operating system, responsible for managing hardware resources and providing essential services.

• The Linux kernel is open-source and developed by a community of developers worldwide.

• It is released under the GNU General Public License (GPL).

• The kernel version can be checked using the 'uname -r' command.

• Examples of popular Linux kernel versions include 2.6, 3.x, 4.x, and

Workload in Linux refers to the amount of work being done by the system at a given time.

• Workload can include tasks such as running processes, handling network requests, and managing system resources.

• Monitoring workload is important for ensuring system performance and stability.

• Tools like top, htop, and sar can be used to track and analyze workload.

• High workload can lead to system slowdowns or crashes.

• Balancing workload...read more

The booting procedure is the process of starting up a computer system and loading the operating system into memory.

• The BIOS (Basic Input/Output System) performs a Power-On Self Test (POST) to check hardware components.

• The BIOS then looks for the bootloader, which is typically stored in the Master Boot Record (MBR) of the hard drive.

• The bootloader loads the operating system kernel into memory and hands over control to i...read more