In this tutorial, we will be learning how to use the RPM Package Manager (RPM command) to install software packages. RPM is a free open-source package manager tool that comes preinstalled in RHEL, Fedora, and CentOS-based distributions. It’s similar to the apt package manager that accompanies Debian and Ubuntu-based distributions. It’s an easy to use
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The tree command recursively lists directories and files in Linux. Files are listed in an indented manner under their directories. Tree command is similar to ls command which is famously known for listing files and directories. The only difference is that tree command outputs the files and directories in a tree-like manner. This command is
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In this tutorial, we will learn how we can run C programs in Linux. C language was developed at Bell Laboratories in 1972 by Dennis Ritchie. It is still very popular for system-level programming. C language is the mother language of many other languages. In fact, Unix is one of the first operating system kernels that
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In this tutorial, we will look at Syslog in Linux and how to send logs to a remote machine using it. Syslog is a standard for message logging. It has been the standard logging mechanism on Linux/Unix systems for a very long time. Although most of the distros now ship with journald – a systemd
What is Syslog in Linux? A Step-by-Step Guide to Set up Remote System Logging Read More »
In this tutorial, we will be installing and configuring the CentOS firewall. We will be using a very powerful and popular Firewall management tool called firewalld. Firewalld is built over iptables (which was previously used to filter network traffic) and comes preinstalled in all newer versions of CentOS, RHEL, and Fedora. Fundamentals of Firewalld Firewalld
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In this tutorial we will install latest Firefox on Debian 10. Let’s get going! Firefox was launched almost two decades ago and to this date it is one of the most popular browsers out there. Most of the Debian based distros usually do have Firefox installed on them but you might need to install Firefox
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The fsck command (file system consistency check) is a utility to check and repair a Linux Filesystem. Modern file systems with journaling are designed such that tools like fsck are not readily required. However, in a few cases, fsck might be the only option to repair a ‘bad’ filesystem. fsck can be run on a
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The vmstat command is short for ‘Virtual Memory Statistics’. It is a tool that reports on Virtual memory statistics. To be specific, it reports data about your system’s memory, swaps, and processor resource utilization, kernel threads, and disks in real-time. Linux developers often use this tool to solve issues related to memory. Running the vmstat
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In this article, we’ll go over the Linux Kernel in layman terms. It all began when a young Linus Torvalds, programmed his own Operating System as a hobby. He allowed other programmers and computer geeks to experiment on the code in order to improve quality and performance. After a few months of modifications, LINUX was
The Linux Kernel – Explained in an Easy to Understand Way Read More »
In this article, we’ll cover the basic commands for memory management in Linux. Memory management is a vast topic and covering it in one blog post will not do it justice. In this tutorial, we will mainly go over the commands that you can use to observe your memory statistics. Physical vs Virtual Memory in
Memory Management in Linux – How to Manage Linux Memory Read More »