Connect to wep with terminal

$ iwconfig wlan0 essid key s:
$ dhclient wlan0

Connect to wpa with terminal (ubuntu)

assuming your wirelesscontroller is named “wlan0″

First, stop network-manager:

sudo /etc/init.d/networkmanager stop

Then make a config for wpa_supplicant:

wpa_passphrase "ssid" "password" > wpaconfig
sudo wpa_supplicant -iwlan0 -cwpaconfig

When you see from the output that you are connected, press [ctrl+z] to run wpa_supplicant in the background temporarily and type $bg to run it in background.
To be assigned to a IP:

sudo dhclient wlan0

Extract sound from video e.g youtube

Download the video, using e.g clive, then enter the following line:

$ mplayer -vo null -ao pcm:file="audio_output":fast "video_file"

Transfer files via SSH

There are a lot more simpler ways to do this operation, you can e.g use nautilus and type in address:

sftp://user:password@IP

or you can use an sftp-application like FileZilla. If you are a little more curious, do it the shell-way:

$ scp /din/lokale/filplassering/fil.txt bruker@IP-adresse:/servers/disk/plassering/fil.txt

scp is a standard shell-command and is an acronym for secure cp (copy)

SUN’s Java for firefox

The standard java-plugin that comes with firefox for ubuntu have several I heard of had problems with, especially regarding netbanks. This is how you install SUN’s Java for your ff:

First thing, remove all installed java plugins:

$sudo apt-get remove -y icedtea-gcjwebplugin openjdk-6-jre openjdk-6-jre-lib

Install SUNs java:

$sudo apt-get install --reinstall -y sun-java6-jre sun-java6-plugin

Make SUN system standard:

$sudo update-alternatives --auto java

Make SUN standard in web browser:

$sudo update-alternatives --auto xulrunner-1.9-javaplugin.so

Restart firefox/opera:

$pkill firefox

Alternative to ConvertXtoDVD for Ubuntu (XviD to DVD etc)

ConvertXtoDVD for windows has been working excellent, but it didnt work out quite well under wine so I figured something had to work out native in Ubuntu. I found DeVeDe:

It’s an ease to use and you can install it from apt:

$ sudo apt-get install devede

Use backspace to navigate back in firefox

In Windows this is standard, but for Ubuntu, there is only the “alt+arrow” option, so you have to do a little firefox trick to be able to use the backspace button to browse backwards in history:

In the adress field, type: about:config
Then filter “browser.backspace_action” and change the value to 0.

Ubuntu printer management

Took some time for me to figure it out, but needed to change the paper format from “letter” to “A4″ wich is the standard Norwegian format. To do so, open

http://localhost:631/

And change whatever you need

HOW TO: µTorrent in Ubuntu 9.04

There are alternatives to µTorrent like deluge, transmission and the official bittorrent client, but I just like µTorrent a lot better, and wanted to see how it performed through wine, and the outcome was splended. The road to making it work like it should is a little tricky, but here it is:

Innstallation:

Download wine:

$ sudo apt-get install wine

Then download and install µTorrent through wine:

$ wget http://download.utorrent.com/1.7.5/utorrent.exe
$ wine utorrent.exe

Choose yes to all when prompted to add shortcuts. You will now have a shortcut on your desktop and one under the wine menu. Please be sure this works before continuing.

Open a document called utorrentu under /usr/local/bin/

$ sudo nano /usr/local/bin/utorrent

and add the lines:

#!/bin/sh

if [ "$1" ]; then
torrent_file=”Z:`echo $1 | sed ‘s/\//\/g’`”
env WINEPREFIX=”/home/USER/.wine” wine \
“C:\Program Files\uTorrent\uTorrent.exe” “$torrent_file”
else
env WINEPREFIX=”/home/USER/.wine” wine \
“C:\Program Files\uTorrent\uTorrent.exe”
fi

Replace all USER with whats suits you. Then run make the file executable

$ sudo chmod +x utorrent

This is the script we will run µTorrent with. It will help us to make µTorrent change locations from windows to linux-format (Z:\tmp\torrent.torrent to /tmp/torrent.torrent)

The we need to edit the .desktop file:

$ sudo nano ~/.local/share/applications/wine/µTorrent.desktop

This looks a little something like this:

[Desktop Entry]
Name=µTorrent
Exec=env WINEPREFIX=”/home/sinnadyr/.wine” wine \
“C:\Program Files\uTorrent\uTorrent.exe”
Type=Application
StartupWMClass=Wine
Icon=6948_utorrent.0

Replace the Exec-line with:

Exec=/home/sinnadyr/bin/utorrent %f

and add these to lines to the document:

Categories=Network;FileTransfer;P2P
MimeType=application/x-bittorrent

Now the µTorrent.desktop should look like this:

[Desktop Entry]
Name=µTorrent
Exec=/home/sinnadyr/bin/utorrent %f
Type=Application
StartupWMClass=Wine
Icon=6948_utorrent.0
Categories=Network;FileTransfer;P2P
MimeType=application/x-bittorrent

To make µT run as standard torrent-client, run

$ sudo nano ~/.local/share/applications/defaults.list

and add the line

application/x-bittorrent=µTorrent.desktop

Then what we need to do is update the Gnome fileassociations:

$ update-desktop-database ~/.local/share/applications

In the end, open firefox, Edit -> Preferences -> Applications -> Bittorent seed files -> use other > and type in:

/usr/local/bin/utorrent

GREAT SUCCESS!

From youtube to avi

Download clive:

$ sudo apt-get install clive

Download AviDemux:

$ sudo apt-get install avidemux

Find the youtube video you want and copy the adress, then run:

$ clive http://youtube.com/watch?v=flSRA_XXXX

Clive will now download the video in .mp4-format that is supported by most players, but if you import it to avidemux end choose output format (video and sound) as wanted and choose save to you can make it an .avi.