The root user enjoys the privilege of being able to access just about anything in the Linux system. While disabling root login is an authentication strategy that might boost security, people still debate whether it’s truly effective or not. Don’t worry, in this tutorial we’re going to walk you through different ways to prevent root
Methods to Enable or Disable Root Login in Linux Read More »
In the previous shell scripting tutorial, we worked with simple variables in shell scripts. Today we’ll cover arrays in shell scripts, and how we can create and make use of arrays within our scripts. To declare or create arrays on the fly, we will use the declare command (more explicit) or directly write array_name=(element1 element2
Shell Scripting 101: Arrays in Shell Scripts Read More »
In our previous tutorial, we learned the use of the while loop in shell scripts. Now, let’s make use of the break and continue statement in Linux and manipulate the flow of loops. As we know, a loop will end if the condition supplied to it becomes FALSE. But what if you’re running a loop
Shell Scripting 101: Break and Continue Statement in Linux Read More »
There are multiple ways of setting hostname in Debian or Linux system. You can temporarily change the hostname, or permanently apply the changes to a system. Let’s go over these methods. Setting hostname temporarily Let’s start with the temporary and simple method. The hostname command in Debian allows you to set up the system hostname
Setting Hostname in Debian Read More »
Let’s have a look at a really simple to use firewall, the UFW firewall. As a system administrator, it is our duty to make sure that the systems we work on are secured from attackers. There are multiple methods to incorporate in terms of network security but the most fundamental one begins with a firewall.
How To Set Up And Configure UFW Firewall in Ubuntu/Debian Read More »
Continuing our series, in today’s article, we’ll go over the until loop in shell scripts. We’ve already covered for loops and while loops in shell scripts in our previous tutorials. You’ll find a lot of similarities in the while and until loop so we’ll also look at the differences between both the loops in this
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We talked about the while, for, and until loops in shell scripts in the past few tutorials now. Let’s learn the select loop in shell scripts, a very interesting and unique loop in bash. Why is it interesting or unique? Let’s find out in this tutorial today. What is the select loop in Shell Scripts?
Shell Scripting 101: The select Loop in Shell Scripts Read More »
This article provides an introduction to programming the BF533 STAMP board and is meant for readers with some expertise in UNIX and also with embedded devices. It contains a basic description of utilizing the board for embedded programming as I actually have dodged any drawback. Softier’s native-DSP UNIX, the Blackfin uClinux can run as a
Another Native DSP Linux Port – ADIS Blackfin Read More »
Epiq Solutions, an engineering firm specializing in the development of versatile wireless communications systems, has declared Matchstiq, which it claims is the world’s smallest commercially offered Software Defined Radio (SDR). Matchstiq includes an Atlas-I-LPe pc module developed by iVeia inc, that combines a Xilinx® Spartan®-6 LX45 FPGA with a Texas Instruments 1 GHz ARM Cortex-A8
Embedded Linux powers first handheld software-defined radio Read More »
Smartphones portrayed twenty-three percent of all French telephone sales to U.S. shoppers within the fourth quarter of 2008, compared to only twelve percent within the previous quarter, per the NPD cluster. Led by the discharge of Apple’s iPhone 3G at $199, the typical value for a smartphone fell twenty three percent from $216 within the
Smartphones Strong Despite Recession 2008 Read More »