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Articles by Satish Kumar
Page 55 of 94
How to Install and Configure OpenSSH Server In Linux?
OpenSSH is an open-source tool that provides secure encrypted communication between different machines on a network. It is widely used in Linux-based systems as a way to securely access and manage remote servers. In this article, we will discuss how to install and configure OpenSSH server in Linux. Step 1: Checking if OpenSSH is Installed The first step in the installation process is to check whether OpenSSH is already installed on your Linux machine. To do this, open your terminal and type the following command − ssh -V If OpenSSH is already installed, the ...
Read MoreIntroduction to Bash Globbing on Linux
Bash globbing is the process of using wildcard characters to match multiple filenames or paths in the shell. Bash provides several special characters that can be used for globbing, such as *, ?, and []. This feature allows you to perform operations on multiple files without having to specify each filename individually. The * character is a wildcard that can match zero or more characters in a filename or path. For example, the command ls * would list all files in the current directory, while the command ls *.txt would list all files with the .txt extension in the ...
Read MoreAuto Logout in Linux Shell Using TMOUT Shell Variable
When using a Linux shell, it's essential to ensure that users are logged out when they are not actively using the system to maintain security and efficiency. This can be achieved by setting an automatic logout timer using the TMOUT shell variable. In this article, we will explore how to set up auto logout in Linux shell using TMOUT, its benefits, and how to modify the settings. What is TMOUT Shell Variable? TMOUT is an environment variable in Linux shell that defines the number of seconds a shell session can be idle before it is automatically logged out. ...
Read MoreAutojump – An Advanced ‘cd’ Command to Quickly Navigate Linux Filesystem
As a Linux user, you probably find yourself navigating through your file system on a regular basis. Whether you're moving between directories to run commands or searching for specific files, you may have found that using the cd command can become cumbersome and time-consuming, especially if you have to navigate through multiple directories. Fortunately, there's a solution: Autojump. What is Autojump? Autojump is a smart command-line tool that allows you to quickly and easily navigate through your file system by learning your most frequently used directories. It's an intelligent alternative to the standard cd command, and it's especially ...
Read MoreHow to Install & Setup a Mumble Server {Murmur} on Linux CentOS 7
Mumble is an open-source, low-latency, high-quality voice chat software primarily designed for online gaming communities. It provides a secure, reliable, and scalable communication system for users. Mumble has two components: the client software that users install on their machines, and the server software (called Murmur) that runs on a dedicated server. This tutorial covers how to install and configure a Mumble server on Linux CentOS 7. Prerequisites Before starting the installation process, ensure the following requirements are met: A Linux CentOS 7 server with root access An SSH client such as PuTTY or Terminal A non-root ...
Read MoreExclude grep From ps Results on Linux
The ps command in Linux displays information about running processes on a system. It provides a snapshot of current processes, including process ID (PID), user ownership, CPU and memory usage, and the command that started the process. When using ps with grep to filter processes, the grep command itself often appears in the results, which can be unwanted. Common Problem with ps and grep When searching for specific processes using ps | grep, the grep command itself appears in the output because it's also a running process at that moment: $ ps aux | grep ssh ...
Read MoreAutomate RHEL 7 Installation Using ‘Kickstart’
Red Hat Enterprise Linux 7 (RHEL 7) is a popular operating system used in many enterprise environments. As a system administrator, automating the installation process of RHEL 7 can be very beneficial. Automating installation saves time and reduces the risk of human error. Kickstart is a tool that can be used to automate the installation process of RHEL 7. In this article, we will look at how to use Kickstart to automate RHEL 7 installations. What is Kickstart? Kickstart is a tool used to automate the installation process of RHEL 7. With Kickstart, you can create a script ...
Read MoreHow to Check Logs Using journalctl in Linux
Logs are a crucial component of any Linux system, as they provide a record of system activity, including system events, user actions, and system processes. journalctl is a command-line utility for viewing and managing logs on Linux systems using the systemd initialization system. It provides powerful filtering and formatting capabilities to help administrators monitor system health and troubleshoot issues effectively. Basic journalctl Commands The journalctl command can view and filter system logs for all system services, the kernel, and specific services or users. It can display the entire journal, view logs from a specific boot, or filter logs ...
Read MoreAutomated Deployment of Spark Cluster on Bare Metal Cloud
Apache Spark is a widely used distributed computing framework for big data processing. It provides a flexible and scalable solution for processing large amounts of data in a timely manner. However, deploying and managing a Spark cluster can be a challenging task, especially for those who are new to the field of big data. In recent years, Bare Metal Cloud (BMC) providers have emerged as a promising solution for running distributed systems. BMCs provide the benefits of cloud computing, such as flexible resource allocation, while also providing the performance benefits of dedicated hardware. This article discusses how to automate ...
Read MoreHow to Install a Debian 10 (Buster) Minimal Server
Debian 10 (Buster) is a reliable and secure server operating system known for its stability, security, and open-source nature. A minimal server installation provides a stripped-down version without graphical interface or unnecessary software, making it ideal for custom server configurations tailored to specific needs. Before proceeding, note that installing a Debian 10 minimal server requires basic Linux command-line knowledge. If you're new to Linux, consider starting with a desktop version like Debian 10 GNOME before moving to the minimal installation. Prerequisites Basic understanding of Linux command line USB drive with at least 4GB capacity Target server ...
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