Tag: linux command

Bourne Again Shell (Bash) comes available for all the GNU and Linux operating systems. The best part about using Bash is the flexibility that you get in navigating the …

The Graphical Network Simulator-3 (GNS3) is an open-source program designed to help in network emulation, and it offers more features than Cisco’s packet tracer. With the GNS3, you can …

“This tutorial explains how to use Ngrok to make local resources public. For example, to make a local website from the localhost accessible from the internet. After reading this …

“xargs is a bash command that allows the execution of multiple commands in the same line. Whether the commands take parameters or arguments as input, they can run in …

In UNIX/Linux, the sed (stream editor) command parses and transforms texts with the help of regular expressions. It’s one of the very first tools to support regular expressions. Today, …

“Fail2ban is an open-source log parsing application that prevents your system from brute force attacks. It parses log files and blocks IP addresses that have too many authentication failures. …

“The shuf command is helpful for randomly shuffling input lines to standard output. The shuf command takes input from files or the standard input, randomizes the input, and gives …

.CRT file extension represents an SSL/TLS certificate to secure communication between a web server and a browser. Today, we will explore how to generate a certificate using the OpenSSL …

Battery use on Linux is particularly high as compared to other operating systems. One of the reasons behind this unusual power drainage is that the hardware vendors do not …

On Linux, you are probably used to the cat command, which, followed by a file, concatenates the file’s contents to the standard output. With the cat command, the concatenated …