Linux Server Administrator Interview Questions and Answers

sed command is a stream editor used to perform text transformations on an input stream or file.

• sed stands for stream editor

• It reads input line by line and applies specified operations on each line

• Common operations include search and replace, insert, delete, and more

• Syntax: sed 'operation' filename

• Example: sed 's/old/new/g' file.txt (replaces all occurrences of 'old' with 'new' in file.txt)

Yes, I have knowledge of patching in Linux Server Administration.

• Patching involves applying updates, fixes, and security patches to the Linux server system.

• Regular patching helps in keeping the server secure and up-to-date.

• Tools like yum, apt, and zypper are commonly used for patching in Linux servers.

• Patching process may require server downtime or reboot to apply changes.

• Automated patch management tools can streamline the patching process.

• Example: Applying security patches t...read more

The boot process is the sequence of steps that a computer system goes through to start up and load the operating system.

• BIOS or UEFI firmware is loaded first

• Boot loader is loaded next to locate and load the operating system kernel

• Kernel initializes hardware, mounts the root file system, and starts system services

• Init process is started to bring the system to a usable state

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

• LVM allows for flexible allocation and resizing of disk space

• It provides features like striping, mirroring, and snapshotting

• Logical volumes can span multiple physical disks

• LVM uses physical volumes, volume groups, and logical volumes as its main components

• Commands like pvcreate, vgcreate, and lvcreate are used to create and manage LVM