There are many pdf reader available for Linux, and in a former article I’ve took a look at some of the traditional programs, such as Evince, Xpdf or Okular, but sometime you have to do a presentation with a file in PDF format and so you could use some more special effect to keep the attention of your public alive, so let’s take a look at PDFcube and Impressive.
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Inspired from a post by Concepcion Claudio Certad, today I’ve taken a look at a command that I did not known: compgen.
The compgen builtin command expands a list of arguments to generate completion matches, so it allows us to display the commands, functions, directories and aliases available for the current user. In short compgen is a command that displays commands.
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Sometimes you have some firewall that don’t allows you to accept connection other than some specific ports let’s say that you can connect on your VPS or remote server only on the ports 80 (http) and 443 (https), but you need a port also for ssh to manage your vps/server but the port 443 is used by your Web server with its https protocol, so what can you do ?
This is where sslh comes in. It’s a really simple tool that wraps incoming connections to a port and then depending on protocol redirects it onto sshd back on port 22, or to your web server on localhost:443.
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When you look online for reviews of social media applications, Windows and Apple platform applications always dominate the list. Linux geeks, however, have a long history of using social media tools to discuss geeky and techie topics online. Until fairly recently, however, most large scale development around social media tools on Linux was virtually non-existent. Linux users were expected to follow their usual fare of bare bones interfaces and text based controls. With the growing interest of Linux on the desktop for the more general audience, however, many developers have started putting effort toward creating more user friendly applications for social media. While this of course is beneficial for newer users of Linux who came from the Microsoft and Apple platforms, using and contributing to these social media apps is also in the best interest of anyone who wants to further the Linux cause and gain more market acceptance for our favorite open source operating system.
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Original article by http://janssenlima.blogspot.it/ in Portuguese
Today I’ll talk about a very important type of monitoring that is rarely discussed (perhaps because not so many people are privileged to work with hardware that supports this technology: IPMI).
The Intelligent Platform Management Interface (IPMI) is a standard used to manage a computer system and monitor its operation. Its development was led by Intel and is today supported by more than 200 hardware manufacturers.
Its operation is independent of an operating system, which allows administrators to remotely manage the hardware resources even before any OS starts. For example, we can monitor through IPMI system temperatures, voltages, fans (FAN), power supplies, chassis intrusion, etc..
For the ones that wants to go deeper in IPMI specifics, I suggest reading the website of Intel . I think the most interested in this are the Data Center Managers and System Administrators of sites that must be highly available. An IPMI interface collects information using sensors that are responsible for providing this information in real-time.
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