If you're like me (and you're a Linux Journal reader, so you may actually be like me), you probably rotate through your cell phones and/or tablets every couple years. These little devices are so convenient and have been consistently dropping in price, while their power continues to go up, so you may have a few older devices sitting in a drawer. mor […]
I am a visual learner. When I try to teach something, I naturally like to use visual examples. That usually involves me working for hours to create flowcharts in Google Docs using the drawing program. Yes, it works, but it's a very cumbersome way to create a flowchart. Thankfully, I recently discovered Lucidchart. more>> […]
The Readers' Choice issue is just around the corner, and we want to give everyone a chance to nominate their favorites before the vote. Have you stumbled across the most amazing game ever in 2014? Are you an Android developer that created the equivalent of digital sliced bread? Did you order a Linux-powered Borg implant on eBay, and think we all should […]
Text expansion and hotkey automation are the sort of things you don't realize you need until you try them. Those of you who ever have played with system settings in order to change the function of a keystroke on you system understand the value of custom hotkeys. more>>
Sometimes a new piece of code turns out to be more useful than its author suspected. Alejandra Morales recently came out with the Cryogenic Project as part of his Master's thesis, supervised by Christian Grothoff. The idea was to reduce energy consumption by scheduling input/output operations in batches. more>> […]
I use my phone more often to log in to on-line accounts than I use a computer. I can assure you it's not because typing passwords on a tiny keyboard is fun. For most of us, we just have instant access to our phones at any given time during the day. more>>
I'm writing this in a hotel room entered through two doors. The hall door is the normal kind: you stick a card in a slot, a light turns green, and the door unlocks. The inner one is three inches thick, has no lock and serves a single purpose: protection from an explosion. more>>
Gah, so frustrating! Ten years ago I wrote a rather popular book called Wicked Cool Shell Scripts, and I'm working on a new edition—a Tenth Anniversary release. There are lots of new scripts, entirely new chapters and updates to the older stuff. more>>
I run a multi-user system. Most users access resources using ssh client. How to stop leaking process information to all users on Linux operating systems? How do I prevent users from seeing processes that do not belong to them on a Debian/Ubuntu/RHEL/CentOS Linux server?Read answer to: "Linux: Hide Processes From Other Users"
I recently installed CentOS Linux version 7 or Red Hat Enterprise Linux version 7. How can I restart networking service using command line options? How can I start / stop and restart networking service on a CentOS/RHEL 7 based system?Read answer to: "CentOS / RHEL 7 Restart / Stop / Start Networking Command"
How can I analyze line rate taking log file as input on a Linux system? How do I find the IP flooding my Apache/Nginx/Lighttpd web-server on a Debian or Ubuntu Linux?Read answer to: "Linux / Unix logtop: Realtime Log Line Rate Analyser"
How do I install the extra repositories such as Fedora EPEL repo on a Red Hat Enterprise Linux server version 7.x or CentOS Linux server version 7.x?Read answer to: "Install EPEL Repo on a CentOS and RHEL 7.x"
I have created/launched Amazon Machine Image (AMI) instance powered by a CentOS/RHEL/Red Hat Enterprise Linux. How can I connect to my instance using OpenSSH Linux/Unix/OSX ssh client?Read answer to: "Connect To Amazon AWS EC2 Instance From a CentOS / RHEL Using SSH Client"
How do I install gnu gcc compiler and related tools such as autoconf, automake, flex, c++ compiler, and bison on a CentOS 7 or Red Hat Enterprise Linux version 7 server?Read answer to: "CentOS / RHEL 7: Install GCC (C and C++ Compiler) and Development Tools"
I'm installing FreeBSD 10 Xorg and xfce4 desktop. But, getting the following error: (EE) Failed to load module "fbdev" (module does not exist, 0) How do I fix this problem on FreeBSD 10 amd64 based system?Read answer to: "FreeBSD: (EE) Failed to load module “fbdev” (module does not exist, 0) Error and Solution"
I am a new Ubuntu Linux and bash shell user. I also know how to redirect output from display/screen to a file using the following syntax: cmd > file ls > file However, some time errors are displayed on screen. How do I store and redirect output from the computer screen to a file on a Linux or Unix-like systems?Read answer to: "Linux Redirect Error […]
I know keeping a FreeBSD server up to date is a very important. How can I apply binary system patches and updates to a new installation of FreeBSD 10 server?Read answer to: "FreeBSD 10: Apply Binary Updates To Keep Base System Up To Date"
I am new Red Hat Enterprise Linux version 7 user/sysadmin/developer. This version made the big number change for RHEL 7/CentOS 7. How can I install LAMP (Linux, Apache, MariaDB, PHP) stack on a RHEL version 7 or CentOS Linux version 7 using CLI or over ssh based session?Read answer to: "CentOS and RHEL 7: Install Linux, Apache, MariaDB, PHP (LAMP) Stack […]