Showing headlines posted by linuxaria

It is probably a fair bet that as long as humans are Homo sapiens we are going to see forking of our binaries. As with most things there are both reasons to cheer and have a feeling of doom. Here we are going to look at the three most popular Office Suites: OpenOffice, LibreOffice, and Microsoft Office.

Proxmox Ve is an Open Source project developed and maintained by Proxmox Server Solutions GmbH in Austria under the auspices of the Internet foundation of Austria (IPA) and it’s released under the GNU General public license 3. It is a solution based on Debian 6 Squeeze at 64 bit, which duly “customized”, allows to create a virtualization environment of type “bare metal” based on OpenVZ and KVM technologies. Proxmox Virtual Environment, today announced the release of version 2.3. The version brings new compelling features like KVM live backup technology as well as the integration of the Ceph RBD (RADOS Block Device) as storage plugin.

Many NAT firewalls or VPN server time out idle sessions after a certain period of time to keep their trunks clean. Sometimes the interval between session drops is 24 hours, but on many commodity firewalls, connections are killed after as little as 300 seconds, and this can be a problem if you are working on a remote machine and suddenly you find yourself logged out with a message “Connection reset by peer”.

ostfix it’s a great mailserver, but it’s not the easiest of the beast to tame if you aren’t an expert system administrator and just want to setup a mail service for your server and domain, so today I’ll show you how to install and configure PostfixAdmin a web based interface used to manage mailboxes, virtual domains and aliases. It also features support for vacation/out-of-the-office messages.

This software is compatible with different databases and IMAP/POP3 server, in the following article I’ll use Mysql as database server, on a Centos 6 Linux server.

In the past I’ve tested ownCloud a good solution for hosting a personal solution of cloud storage for your files, or perhaps your team, but there is also an interesting alternative: Seafile another open source file synchronization tool, it comes with Dropbox-like file syncing, but is designed to be better suited to teamwork with some of the features that are oriented to this such as..

On any server it’s important to have the most information as possible on what’s going on in real time with tools as pidstat and glances, but it’s also important to collect all the activity done by all the users and processes that are running, to analyze them at a later time or in case of problems of any kind (performance, security, capacity).

Perhaps this is really the year of gaming on Linux, if you are reading this post probably you are interested in gaming and Linux, and I’ve got a good news for you : there is a big sale of games for Linux on Steam until FEB 21, 10AM PST.

Recently I’ve made some researches for a good ERP software, open source of course, and so I want to share some of the product I’ve found while doing this small search.

As first thing a definition for ERP:

Enterprise resource planning (ERP) systems integrate internal and external management information across an entire organization—embracing finance/accounting, manufacturing, sales and service, customer relationship management, etc. ERP systems automate this activity with an integrated software application.

As I wrote more than 2 years ago, the network tools (often referred as net-tools) ifconfig, netstat and route that should be familiar to anyone that has worked with a terminal, have been deprecated in favour of the iproute2 suite from some years. iproute2 is intended to replace this entire suite of legacy Unix networking tools that were previously used for the tasks of configuring network interfaces, routing tables, and managing the ARP table, but which have not been developed since 2001. You can find some examples of the usage of the iproute commands on my articles about:

It’s useful for me to have a transparent terminal in the background that show information from one or more system logs, such as dmesg,messages or get an interactive process status of the system with htop or glances, there are many ways to achieve this, let’s take a look at: xrootconsole, Tilda and Eterm.

In the past I’ve talked about Tomboy, that i was not liking too much to have a Mono application in all my computers, but that Tomboy sync feature was really too good for me, well it seems that someone else has decided that it’s times for me to switch to another Notes program. In a recent post on Ubuntu One blog Canonical announced that its Cloud service (U1, aka Ubuntu One) will cease syncing Tomboy Notes to U1, meaning U1 won’t transfer your notes between computers.

Glances is a free software (licensed under LGPL) to monitor your GNU/Linux or BSD operating system from a text interface. Glances uses the library libstatgrab to retrieve information from your system and it is developed in Python.

In the past I’ve presented some clients for twitter that run on linux terminal, such as twidge and turses , they are really useful not just for connecting to social websites via your terminal but also to do scheduled jobs or procedure that will print a result or a message on these websites. Fbcmd is a command line interface (CLI) for facebook. It is open source and is both “free as speech” and “free as in beer”. It works in Windows, Mac and Linux. Let’s see how you can use it.

When you run a webserver behind a reverse proxy or HTTP accelerator such as Varnish, the webserver access logs will display the IP of the proxy (generally 127.0.0.1) instead of the end user’s IP. This is a problem when you have a software like webalizer, awstats or similar log file analysis program, because you lose one of the most important information: “Who is the requestor of a page ?”, also having all the access coming from the same IP (127.0.0.1) you lose information such as “what’s the browsing pattern of visitors ?” “Is someone trying to do something Nasty ?” In this small how-to I’ll show how to put this information back on your Nginx log files in 2 different ways.

In the past I’ve posted an article about Anonymous browsing with Tor that can be useful when you use your favorite browser and you wish to stay anonymous thanks to the Tor software. Tor (short for The Onion Router) is a system intended to enable online anonymity. Tor client software directs internet traffic through a worldwide volunteer network of servers to conceal a user’s location or usage from anyone conducting network surveillance or traffic analysis. Using Tor makes it more difficult to trace Internet activity, including “visits to Web sites, online posts, instant messages and other communication forms”, back to the user and is intended to protect users’ personal freedom, privacy, and ability to conduct confidential business by keeping their internet activities from being monitored.

Both for a real server, VPS or just your desktop is useful to know which IP address your Linux system is using , this can be easily seen with some command if you are directly connected to Internet via a modem or a public IP of your company, but sometimes you are behind a router, a device that forwards data packets between computer networks, creating an overlay internetwork. A router is connected to two or more data lines from different networks, and at home it’s used to “share” your ADSL that usually has 1 public IP among all your devices, that will get each a private IP. For example at my home I’ve an ADSL Wi-Fi router that I use to get Wi-Fi connection to my 3 PC, 1 smartphone and 1 tablet (android), a printer and my kindle, every device has a private IP , it’s called private because it’s not visible on the public network that can only “see” the IP of my Wi-Fi router, but now let’s see how to check your IP on your Linux computers.

One Late Night is a short immersive horror-game experience, released for free for Linux, Mac and WIndows, the basic idea of this game is to put the gamer in a situation similar to something that it could have been in, and also the scenario is just an office, with standard things (and an android figurine), the idea is that the players will relate themselves to the game setting and scenario and become immersed. Even if you can’t relate to the game storyline, you will still get a good experience.

The main (and the only alive) character is an unnamed graphic designer employee, working late one night at the office, until strange things start to happen. Soon you’ll see strange message on your computer screen and you’ll start to see scaring thing in your office.

A sad day indeed for many users of the .deb format, 2 of my favourites repositories getdeb and playdeb are now closed forever (?), this is the message posted on G+ by their author:

After the server crash where also the GetDeb and PlayDeb database was lost and given the fact that GetDeb and PlayDeb now have too many packages to be handled as a one-man-project I decided to discontinue GetDeb and PlayDeb. In the last years I have spent so many hours in the project that now it is just too much for me to maintain beside my usual job.

But this does not mean that all the work in GetDeb and PlayDeb is lost.

If you are a Linux system administrator or you just wish to save a copy of your alias on the net, this is the service for you ! alias.sh is a new project that offer a simple service: allows you to manage all of your aliases online and browse the list of cool aliases submitted by others. From the term of your desktop, or server, you can run a single command to copy all your aliases on your system, or back into your profile should you require them.

When something goes wrong on your Linux server or desktop, is important to understand which process is taking all the resources, in the past I’ve published some information about top and htop, two great tools to have a general overview of your system with just a glance, but sometimes you need to gather more information of a particular process and for this task the command pidstat is perfect.