Comando do dia!

wget -P ~ ftp://ftp.mozilla.org/pub/firefox/releases/3.0b3/linux-i686/en-US/firefox-3.0b3.tar.bz2 && tar xjf ~/firefox-3.0b3.tar.bz2 -C ~

Com este comando, irás fazer o download e respectiva instalação do Firefox beta 3 duma penada só! Nada mau, hem? Só não te esqueças de arrancar o Firefox 3 com outros Firefoxs fechados!

Do I Need an AntiVirus Program on Linux?

When you think of an anti-virus program, especially if you're coming from a Windows world, you think of a program that runs in the background and scans files as they are accessed (or, perhaps you have your entire system scanned on a regular basis) to see if anything is infected with a virus. This is an effective way of detecting and removing viruses on a desktop computer; and for a Windows machine, it's all but a necessity given the vast amount of threats circulating on the Internet.

Linux anti-virus programs don't work this way, because Linux anti-virus programs aren't meant to protect the desktop machine from Linux viruses. An anti-virus program running on Linux is designed to detect Windows viruses, so that they aren't spread, unknowingly, by the Linux user.

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Leitura dos sensores do computador em Linux

Introduction
Most computers these days come with a myriad of sensors to monitor the temperature of your computer. These sensors are generally located on the processor and the motherboard, and you might also have sensors on your video card. On top of that, all S.M.A.R.T-enabled hard drives have built-in temperature monitoring.

The temperature of your computer is a vital thing to keep track of - heat and computers don't mix very well. Unfortunately, Ubuntu doesn't setup your computer's sensors automatically; but you can follow these steps to enable the temperature sensors in your computer in Ubuntu, or any other version of Linux. While sensor-monitoring is somewhat hardware dependant, this guide will work for most users. It involves heavy use of the command-line, but don't worry - I will walk you through it step-by-step.

1. Installing the sensor libraries

sudo apt-get install lm-sensors
sudo apt-get install hddtemp

Escolher Yes para tudo.

2. Running sensors-detect

sudo sensors-detect

Answer "YES" to all questions! Don't just hit enter, type "YES", because at the end there will be a question for which the default answer is "no", and we'll want to answer in the affirmative.

3. Loading the modules

sudo modprobe [module name]

substituir o [module name] pelo o nome dos modulos que aparecem

4. Monitoring the sensors!

sensors

sudo apt-get install sensors-applet


to install the applet. Now, add the applet by right-clicking on your desktop panel, selecting "Add to Panel," and you will now see a "Hardware Sensors Monitor" applet in the System & Hardware section. Click and drag this to your panel to add it.

The applet will now say that you haven't enabled any sensors; right click on the applet and open its preferences.

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Pré-carregamento

Este software permite o pré-carregamento na memória ram dos programas habitualmente usados, ganhando assim alguma performance ao abrir o mesmo.
O método de funcionamento é por análise estatistica, isto é, quantas mais vezes o programa for aberto, mais prioridade ganha no pré-load. Se o programa deixar de ser usado, o pré-load deixa de o carregar antecipadamente.
Esta tecnologia é semelhante á tão aclamada tecnologia usada pelo vista, com a excepção que esta não consome a brutalidade de recursos que o vista consome logo no arranque.

Para instalar no Ubuntu:

Linha de comandos:

sudo apt-get install preload

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