Raul Suarez's blog

Putty

For different reasons, some people prefer Graphical interfaces, whether it is because because they are more comfortable with them or because they may set-up a non technical person for remote access.

On the past two posts I presented command line tools. These tools require, for the most part, remember cryptic parameters, configuration file locations and unless you script them, you need to enter the whole command every time even if you are doing the same day after day.

The solution: Putty

SSH

The second command in the series is the one I find more useful and versatile so it also will be the longest post.

Different implementations of SSH will have slightly different features. In this case I will focus on OpenSSH.

To install on the server (Debian/Ubuntu):
sudo aptitude install openssh-server

To install on the server (Redhat/Fedora):
sudo yum install openssh-server

To start/stop/restart under Debian/Ubuntu
sudo /etc/init.d/ssh start

Telnet

I'll start this series with the simplest and oldest command.

Remember, it is not safe to expose telnet to the internet.

To install on the server (Debian/Ubuntu)
sudo aptitude install telnetd

To start/stop under Debian
Under Debian, the telnet daemon is started by inetd when the port is accessed. This is controlled by the inetd.conf file. If the telnet line is commented out, telnet will not start, otherwise it will start.

Introduction to remote collaboration tutorials

Phew! It's been a week since the KWLUG meeting where I talked about remote collaboration.

Believe or not, I hadn't had a moment, until now, to make good on my promise to post the tutorials on-line.

First I was on Project Management training in Toronto from Monday to Wednesday, then, Thursday and Friday preparing for an implementation at work that kept me at home in front of the computer all Saturday and Sunday.

Remote Collaboration: A successful presentation

It seems that the time was well spent preparing this presentation. I had an awesome and engaged audience that kept with me through out the presentation, even while we were trying to sort the technical limitations of the physical space.

Unfortunately it seems that the webcast wasn't as successful due to the limited bandwidth at the meeting location. Next time I'll use plan B.

If you logged in remotely, please let me know how was your experience. was the sound good? was the screen choppy? What would you like to see for next time?

Karmic Koala and sound on the HP DV6105us

I attended the Karmic Koala release party at the kwartzlab and had the opportunity to upgrade my laptop from the local repository.

Everything went well except for the sound on the laptop. Thankfully the alphas, betas and RC periods are for people to find these issues and provide workarounds :D.

My card is identified by lspci as

00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2)

The problems were:
- Sound didn't work
- Sound made a crackling sound.

Showing your OpenOffice Impress presentations online

I've been using Impress for some time to create presentations but I used to upload them as odp files when I wanted to share them with the world (in case the world came to see them).

That is, until I "discovered" that exporting them to flash was a piece of cake.

  1. Open your presentation in Impress
  2. From the main menu select "File | Export"
  3. On the Export window select "Macromedia Flash (SWF)"

After that all that's left is

Upload the presentation to a website or file sharing site and reference it from a web page using the following HTML code:

Software Freedom Day

Yesterday I was fortunate to participate in the Software Freedom Day organized by the working centre in Kitchener.

There I had the opportunity to give three presentations.

I'm posting them here in case anyone is interested in looking at them, modifying or using them at other events.

What are we celebrating
In this presentation I walked through some of the current rights and freedoms regarding digital content. The ones we currently have and give for granted as well as some of the existing artificial barriers to enjoy those rights.

Improving XOrg pefromance for Intel video under Ubuntu 9.04 (Jaunty Jackalope)

When I upgraded from Linux Mint version 6 "Felicia" which is based on Ubuntu 8.10 to version 7 "Gloria" based on Ubuntu 9.04 my video performance started suffering badly. Worst of all, I couldn't watch videos using any of the applications installed vlc, miro, gmplayer, mythTV, Totem.

To see the kind of errors I was getting refer to my bug report

What worked for me was reverting the Jaunty Xorg intel driver to 2.4 as explained in this link

Undeleting FAT Files

I already had a post on undeleting files from an NTFS partition. But what if the partition is a FAT partition? Don't worry there are several solutions that will only require you to use a handful of commands.

IMPORTANT: Do not write anything or use the partition where the delete file is. That will increase your chances of getting your files back

I've used a couple of solutions. Both successfully but geared to two different situations:

The fist method is is PhotoRec

http://www.cgsecurity.org/wiki/PhotoRec

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