How to Add a New Disk Larger Than 2TB to An Existing Linux
Have you ever tried to do the partitioning of hard disk larger than 2TB using fdisk utility and wondered why you end up getting a warning to use GPT? Yes, you got that right. We…
How to List Files Installed From a RPM or DEB Package in Linux
Have you ever wondered where the various files contained inside a package are installed (located) in the Linux file system? In this article, we’ll show how to list all files installed from or present in…
How to Add a New Disk to an Existing Linux Server
As system administrators, we would have got requirements wherein we need to configure raw hard disks to the existing servers as part of upgrading server capacity or sometimes disk replacement in case of disk failure….
3 Ways to List All Installed Packages in RHEL, CentOS and Fedora
One of the several duties of a system administrator is to install and manage software on a computer system-Linux in this case and in order keep track of installed/available software packages on your system, you…
Assign Read/Write Access to a User on Specific Directory in Linux
In a previous article, we showed you how to create a shared directory in Linux. Here, we will describe how to give read/write access to a user on a specific directory in Linux. There are…
7 Ways to Determine the File System Type in Linux (Ext2, Ext3 or Ext4)
A file system is the way in which files are named, stored, retrieved as well as updated on a storage disk or partition; the way files are organized on the disk. A file system is…
How to Upload or Download Files/Directories Using sFTP in Linux
sFTP (secure File Transfer Program) is a secure and interactive file transfer program, which works in a similar way as FTP (File Transfer Protocol). However, sFTP is more secure than FTP; it handles all operations…
How to Use ‘Yum History’ to Find Out Installed or Removed Packages Info
YUM is an interactive, rpm based, high level package manager for RHEL/CentOS systems, it enables users to install new packages, remove/erase old/unwanted packages. It can automatically run system updates and does dependency analysis, and also…
How to Auto Execute Commands/Scripts During Reboot or Startup
I am always fascinated by the things going on behind the scenes when I boot a Linux system and log on. By pressing the power button on a bare metal or starting a virtual machine,…
How to Check Remote Ports are Reachable Using ‘nc’ Command
A port is a logical entity which acts as a endpoint of communication associated with an application or process on an Linux operating system. It is useful to know which ports are open and running…
How to Configure Custom SSH Connections to Simplify Remote Access
SSH (SSH client) is a program for remotely accessing a machine, it enables a user to execute commands on a remote host. It is one of the most recommended method for logging in to a…
How to Create a Shared Directory for All Users in Linux
As a system administrator, you may have a certain directory that you want to give read/write access to every user on a Linux server. In this guide, we will review how to enable write access…
How To Assign Output of a Linux Command to a Variable
When you run a command, it produces some kind of output: either the result of a program is suppose to produce or status/error messages of the program execution details. Sometimes, you may want to store…
How to Keep ‘sudo’ Password Timeout Session Longer in Linux
In recent articles, we’ve showed you 10 Useful Sudoers Configurations in Linux and Let Sudo Insult You When You Enter Incorrect Password, and in this article, we discovered a another sudo tip that will help…
How to Find Number of Files in a Directory and Subdirectories
In this guide, we will cover how to display the total number of files in the current working directory or any other directory and its subdirectories on a Linux system. We will use the find…