07 June

Logical Volume Management in Linux

Logical Volume Management (LVM) in Linux is a method to easily manage disk space. Suppose as an admin you have three disks: 60Gb, 50Gb and 40Gb and you want to allocate 80Gb and 70Gb of space to two users U1 and U2 respectively. Now, there is no single unit of either size available. This is […]

26 May

Managing Swap Space in Linux

Swap space is an area in the secondary storage device which is used to supplement system RAM by holding the inactive pages of memory. The combination of system RAM and swap space is referred to as Virtual memory. When the available RAM usage exceeds a specified limit then the kernel will write idle pages belonging […]

18 April

How to create disk partitions in Linux?

Partitioning a disk allows you to create separate sections within the disk inorder to manage your data more efficiently. For example, in Windows you have C, D or E drives. There are various uses of partitioning a disk like:a) Allows to boot different OS from same diskb) Allocate separate partition to different usersc) Creating separate […]

09 February

Access Control List (ACL)

The standard Linux permissions are suitable for most situations but they have their own limitations. The standard permissions limit access to file owner, group owner and others. But, what-if we want to grant specific permission to another named user, other than the user-owner or another named group other than the group-owner. Access Control List (ACL) […]

05 February

Scheduling recurring tasks using crontab command

As a user if you want to schedule certain activities which should repeat themselves on their own at some time in the future i.e., you want to schedule recurring tasks then use the crontab command. In this post we will learn scheduling recurring tasks using crontab command There are different ways to use the crontab […]

24 January

How to Recover a Lost Root Password in Linux

At times we forget the root user password that we have set on our Linux machine. In this post, we will learn how to recover a lost root password in Linux. The procedure is most suitable of RedHat, Fedora and CentOS operating systems. Follow the below mentioned procedure: Step 1: Reboot the machine and stop […]

20 January

Loops(for while until) in Shell Scripting

Loops(for, while, until) in shell scripting are used to perform an operation multiple time. A loop is a portion of code that repeats (iterates) a set of commands till the loop control condition is true. For Loop in Shell Scripting The for loop in shell script has two syntax: Syntax 1: for variable in values […]

27 November

How to Access Pen-drive in Windows Sub-System for Linux

At times, we require to transfer contents to or from the pendrive from WSL(Windows Subsystem for Linux). So, in this tutorial we will learn How to Access Pen-drive in Windows Sub-System for Linux To access Pen-drive in Windows Sub-System for Linux, we have to mount the pendrive. So, follow the below mentioned steps: Step1: Plugin […]

11 October

Using Variables in Shell Scripting

Variables are nothing but a placeholder for storing some value or data. Referencing the value of the variable is called variable referencing. Next, we will learn about using variables in shell scripting. How to assign value to a variable? The synatx for using a variable in shell scripting is simple variable_name=value Remember: Never give space […]