testing the battery again

Almost idle all the time it went around 10 hours today. I had some difficulties so I will try this kind of use tomorrow again.

Testing my new Ultra Capacity Travel Battery

I got this EJ092AA HP 12 cell Ultra-Capacity Travel Battery yesterday. I charged it for around 14 hours, and checked it out. My primary Battery was also fully charged.
I gave a hard time to them: CPU was running around 50% and memory around 30% all the time.

The result is a total of 4 hours (and 4 minutes) runtime with the 2 batteries used together.

Just in fact:

The 12 cell ultra-capacity battery adds + 0,803 kg-s to the 2,1 kg-s Alice already has. So it's nothing that you can call funny. I can hold it on one arm for no longer, and it gets out of balance because the weight is attached on the side and not everywhere. And it looks pretty awful too: the battery hangs out on the back 3 cm-s. I'll try to post some photos, to show it.

Positive is that I got a bunch of AC cables - every kind of specific country types.

I'm still thinking to send it back and buy some simple primary batteries as they are cheaper smaller and lighter. You only have to do a restart when changing them.

Notice: pdfnup --trim

It removes a given amount of margins on the side, with the syntax 'left bottom right top'.

I dropped my tablet pen.

The pen tip doesn't seem to be recognized anymore.
Now what to do? :-(

How to change default application for a filetype?

Right click on the file, choose Properties, select Open with tab, change the application.

How to change your MAC Addresses

$ sudo gedit /etc/network/interfaces

add the hwaddress line under the apposite device - for example:

auto eth0
#iface eth0 inet dhcp
hwaddress ether UR:MA:CA:DD:RE:SS


(ether is the type of device, according to ifconfig - "Link encap:Ethernet")


to restart / stop /start networking:

$ sudo /etc/init.d/networking restart
$ sudo /etc/init.d/networking stop
$ sudo /etc/init.d/networking start

ImageMagick converting multiple files

*I do not use this method anymore, although it was a great start.*

After being a book-worm for half a day, I found out how can I write a working script to solve my imagemagick output problem.
It looks like this:

#!/bin/sh

for i in `find -iname '*.jpg'`
do
convert $i -background white -flatten -colorspace Gray -negate -edge 1 -negate -normalize -sharpen 1 -threshold 50% -despeckle -blur 0x.5 -normalize +dither -posterize 8 gif:- >> $i.gif
done

1.) open your favorite text editor
2.) copy paste the script
3.) save as anyname.sh
4.) make it executable

Usage:
1.) copy anyname.sh in the folder containing only the image files you want to make simple
2.) go (cd) to this folder in the terminal
3.) type ./anyname.sh
4.) wait and see.

How to convert this to pdf?

mogrify -format pdf *.JPG

How to join these single-page pdfs?

pdfjoin *.pdf --outfile newname.pdf