Charanjit Cheema

Ubuntu 20.04 LTS has released on April 23, 2020 (with code name “Focal Fossa”) by succeeding its Ubuntu 19.10 as a Latest Stable Linux OS. As Ubuntu 20.04 LTS has suffix “LTS” that’s means it has Long Term Support for 5 years from Ubuntu. Ubuntu 20.04 LTS has come with many features some key features it comprises as below: Linux Kernel 5.4 Faster boot speeds OEM logo displayed during boot Improved appearance Dark theme Fractional scaling setting Ships with GNOME …

8,744 total views, 2 views today

Linux kernel is a core of Linux Operating system (OS) it work as interface between hardware and processes for OS. Linux kernel was first developed by Linus Torvalds in 1991 since now many kernel have been released. This year Linus Torvalds has announced in his mailing list(LKML) about the released of new stable Linux kernel 5.5 codename Kleptomaniac Octopus, for general public which can be directly download from kernel.org Linux Kernel 5.5 comes with many performance enhancement, security fixes, new …

9,287 total views, 10 views today

Introduction to Inode File descriptors, file table and inode table in Linux. Image Source: Wikipedia An inode is a data structure on a filesystem on Linux and other Unix-likeoperating systems that stores all the information about a file except its name and its actual data. Inode is created during creation of file along with file name, inode is an integer value which is always be unique for different files in Linux filesystem. File name and corresponding inodes are stored as …

24,140 total views, 10 views today

Corruption of initramfs can be occur by many ways for example after patching CentOS 7 Linux OS or installing a buggy device driver in server you found CentOS 7 Linux server has become unbootable. You may also encouter below kernel panic error because server initramfs got damaged . CentOS 7 Linux Kernel Panic screen Now in such situation specially server which is in production environment could cause outage which can create serious problems for your organization and you can’t take …

102,906 total views, 150 views today

Linux is known for one of most secure Unix Operating System (OS) in world. But that is not mean it is 100% secure there is say in Information Technology (IT) no technology is a completely secure that is why from a System Administrator to CIO they take measure for securing IT infrastructure on regular basis by applying Personal Security, Hardware Security and Software Security. In this tutorial we won’t discuss on these topics as these are beyond the scope of …

37,004 total views, 48 views today

Amazon CloudWatch is a monitoring service which monitor AWS resources on Cloud. It comes with dozen of monitoring metrics which ease Cloud Admin to use them in monitoring their AWS Infrastructure services resources like Amazon EC2 instances, Amazon S3 Cloud Storage, Amazon RDS (Relational Database Service) on Cloud etc. It collects monitoring and operational data in the form of logs, metrics, and events, providing you with a unified view of AWS resources, applications and services that run on AWS, and …

9,616 total views, 8 views today

I was using t2 micro instance for my WordPress website for one year on trial basis as most of you might know AWS provide 750 hours/month free tier usage of its t2 micro instance for a year. But as year passed my instance usage reached high and its trial usage also reached to finish. Due to cost perspective I went to AWS customer support for assisting me in this regard they suggested me to use Amazon EC2 Reserve Instance instead …

25,742 total views, 28 views today

AWS Amazon S3 is a Simple Cloud object storage solution provided by Amazon. Have a look below what Amazon write and say about S3: Amazon Simple Storage Service (Amazon S3) is an object storage service that offers industry-leading scalability, data availability, security, and performance. This means customers of all sizes and industries can use it to store and protect any amount of data for a range of use cases, such as websites, mobile applications, backup and restore, archive, enterprise applications, …

26,330 total views, 8 views today

Microsoft has added Windows Subsystem for Linux (WSL) from Microsoft Windows 10 version 1607 onward and Windows Server 2019 it has replaced the older Windows Services for Unix it is like WINE in Linux which provide compatible layer for running Windows based application on Linux likewise WSL provide a subsystem or layer on which different Linux distro and applications can be run. It even support to run Linux GUI programs using an X Server. Developers can compile Linux binaries on WSL. Unlike …

4,916 total views, 4 views today

Multi-Factor authentication (MFA) is an extra layer of security, it is a combination of more then one credentials which authenticates the user example combination of user password with security token (software or hardware based), using of biomatric verification for authenticating the user credentials. By adding extra layer in security it make difficult for unauthorised person to get access of confidential resources like compute devices, network or database. It is helpful in case if one layer get compromised the attacker still …

10,522 total views, 2 views today