Valor PayTech Linux Server Administrator Interview Questions and Answers

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

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)