One of the important tasks of a system administrator is to analyze, install or remove packages on a system. Advanced package tool or apt is a package manager that is used in Debian, Ubuntu and related distributions for the installation, removal of packages. In this article, we will use the same tool to list the … Read more
KVM or kernel-based virtual machine is a virtualization module of Linux kernel. It requires hardware with virtualization extensions such as Intel-VT or AMD-V to provide hardware-assisted virtualization. By using VirtIO it provides paravirtualization support for various operating systems such as Linux, FreeBSD, Windows, etc. While working on VMs sometimes you may need to use a … Read more
Linux/Unix is a multi-user operating system that means more than one user can use system resources simultaneously. In order to use the system resources, users are required to login to their respective user accounts. These user accounts are created to prevent unauthorized users from using the system as well as to control the data access. … Read more
Tcsh or TENEX c shell is a Unix shell similar to other shells such as bash, ksh, zsh, etc. It is an improved version of the c shell, t in tcsh comes from TENEX operating system. Tcsh is c shell with command-line completion, command-line editing, and few other features which are borrowed from TENEX OS. … Read more
A system backup is a process in which the state, files, and data of a computer system are copied and stored somewhere. Later if primary data is corrupted, deleted, or lost then it is used to recover the original data. For useful recovery, a backup must be made by copying the source data image when … Read more
Android studio is the official IDE for android application development by Google. It is based on JetBrains’ IntelliJ IDEA software. Android studio has various features such as Gradle build support, android specific refactoring and quick fixes, built-in support for google cloud platform, etc. It also includes AVD (an emulator) to run and debug apps quickly. … Read more
In a Linux/Unix system sometimes you may need to change the username or User ID (UID) of a user account. There are a lot of configurations depends on the UID of a user. So while changing username by login to that account a running process can interrupt us to do so. We can easily change … Read more
A system backup is a process in which the state, files, and data of a computer system are copied and stored somewhere. Later if primary data is corrupted, deleted, or lost then it can be used to recover the original data. For useful recovery, a backup must be created when the system is in a … Read more
Linux/Unix are multi-user operating systems that means different users can access the system at a time and can use system resources simultaneously. To access the resources of a system you must have a user account on that system. Ahead in this article, we will see more about users and groups in a Linux or Unix … Read more
Linux is a multi-user operating system. It means more than one user can use system resources simultaneously. To use the system resources a user must have a user account on the system. So before we start discussing today’s topic you should understand the type of accounts that a Linux/Unix system can have. Types Of User … Read more
Before we start running a command to find the IP addresses from the domain name. First, we will discuss briefly IP address and domain names. An IP address is a unique identifier that is assigned to each device connected to a computer network and uses Internet protocol for communication. A computer uses this address to … Read more
A root user is a most privileged user account in a Unix based operating system. It has access to all the commands and files of the system. A root user is also called a superuser or administrator because it is needed to perform administrative tasks. It is used to perform tasks such as installing software, … Read more