Lucid Lynx on paapereira.xyz

Install Chromium with Lucid looks

Sat, 29 May 2010 17:26:00 +0100

I’ve been using Firefox for years, but I’m trying out Chromium and so far it’s been great and fast.

Install

You can just go to Ubuntu Software Center and type Chromium to install, or install via Terminal:

1sudo apt-get install chromium-browser

Daily Builds

If you want to get the latests versions of Chromium add to your Software Sources:

1deb http://ppa.launchpad.net/chromium-daily/ppa/ubuntu lucid main

Customize to look like Lucid

You can install the Ambiance theme from Google Chrome Extensions.

Oracle VM VirtualBox 3.2

Wed, 19 May 2010 22:44:00 +0100

After the acquisition of Sun Microsystems by Oracle Corporation VirtualBox is now called Oracle VM VirtualBox.

If you have a previous version already installed you need to manually install the new one. This is the 3.2.0 version.

Install

Go to System > Administration > Software Sources and Third-Party Software.
Add the following sources for Lucid (check your distribution here)
Download and register Oracle authentication key

1wget -q http://download.virtualbox.org/virtualbox/debian/oracle_vbox.asc -O- | sudo apt-key add -

Be sure your source list is updated

1sudo apt-get update

Be sure you have dkms installed (so Virtualbox host kernel is automatically updated as you update your system kernel)

1sudo apt-get install dkms

Install Virtualbox 3.2

1sudo apt-get install virtualbox-3.2

Logoff and login again
Start Virtualbox at Applications > System Tools > Sun VirtualBox
Don’t forget to install/reinstall the Guest Additions in all your virtual machines (after starting the virtual machine go to Devices > Install Guest Additions)

Installing Ubuntu 10.04 Lucid Lynx (on the Desktop)

Thu, 06 May 2010 09:12:00 +0100

Last week Ubuntu 10.04, codename Lucid Lynx, was released.This is a Long Time Support (LTS) release and will be supported until 2013.

After installing Lucid in my desktop my motherboard died, so I had to do a fresh install in a new computer.

I will be the using the 64 bit desktop cd (ubuntu-10.04-desktop-amd64.iso).

Before you start

Backup your data
Make a list of software you want to recover after the clean install and all the preferences/options you use. This will make you post install easier and you can start working faster.
Make a list of the extra Software Sources you use
Check the Release Notes
Download Ubuntu
Check the file hash (example: md5sum ubuntu-10.04-desktop-amd64.iso) and compare it to UbuntuHashes
Burn a cd (you can use Brasero, for example, if you already use Ubuntu).

Running the live cd

Boot from the cd.

ufw - Ucomplicated Firewall

Tue, 10 Jun 2008 15:49:00 +0100

I’m starting to play around with ufw (Ucomplicated Firewall), a firewall for Linux.

It’s command line based, but simple enough.

I’ll update this post as I play along.

Enable/disable ufw

1sudo ufw enable
2sudo ufw disable

Default policy

mostly open ports

1sudo ufw default allow

mostly closed ports

1sudo ufw default deny

Allow/deny services syntax

1sudo ufw allow|deny <service>

Add rules syntax

1sudo ufw allow|deny [proto <protocol>] [from <address> [port <port>]] [to <address> [port <port>]]

Delete rules syntax

1sudo ufw delete <rule type> from <ip address> to any port <port number>

Firewall status

1sudo ufw status

1Firewall loaded
2To Action From
3-- ------ ----
424800:tcp ALLOW 100.000.1.1

Examples

1sudo ufw allow proto tcp from 100.000.1.1 to any port 24800
2sudo ufw delete allow proto tcp from 100.000.1.1 to any port 24800
3sudo ufw allow ssh
4sudo ufw delete allow ssh