wireless usb ehh

2 days ago, the wireless usb standard is approved by ecma.

wireless usb aka wusb is a new standard where a wireless device is able to connect to computer way faster than bluetooth, which is about 480Mbps at 3 meter and 110Mbps at 10 meter.

in layman term, you know why we don’t connect our digital camera to a computer with a bluetooth and uses a USB instead? because bluetooth is not fast enough. the wireless USB standard means that, we don’t need to use a cable to transfer file between a computer to let say, a digital camera.

in a nutshell, in the future, our personal device, that uses usb, such as mp3 player,camera, phone,memory stick, etc. will probably use, wireless usb instead. while the standard is just being announced 2 days ago, wusb product is already available in the market. and wusb dongle can be used with usb 2.0.

the news is here:
on ars technica
on wikipedia(for explaination)
and linux already provide tools+driver for wireless usb already

application on the go

my last post is about putting diagnostic software on pendrive. today i show another piece of work, but this time is for fun.

http://portableapps.com/apps

http://portableapps.com/suite

portable apps is a set of open source application modified to be installed on your pen drive. the application include, media player, web browser, antivirus, game, office suites. all this for free, which should be because it is open sourced. and when installed take about 260 Mb on the pendrive, and 105Mb if used lite edition.

windows utilities

when you use windows, there is time it is useful to have some system utility to use. i just found a ‘few’, that is quite useful:

http://www.dailycupoftech.com/usb-drive-systems/3/

this is a website where, the author have combine a set of windows utilities into a 14Mb file, zip file. so you can put it into your pendrive.

another useful one is sysinternal:

http://www.microsoft.com/technet/sysinternals/default.mspx

that you have to download one by one.

not that i like windows, i’m not, in fact i’m an linux user(penguin rocks man), but sometime i have to face it. not to brag, but linux have this set of tools comes in by default. lsof, netstat, tcpdump, top, iftop, touch, i can even cat the /proc directory.
most unix have utilities build in too, just some of it different than those on linux.

command line……… thats cool

today i found this link:
http://tags.lifehacker.com/software/cygwin/

some of my actually think that i’m crazy when i say command line rocks. but seriously, i really mean it. if you happens to own a *nix box, (unix computer i mean) you will understand.

when a linux desktop is unresponsive, i can just open the terminal and type “ps -A” then type “kill -9 process-number”. or worst i just press alt-f1, then login again, then type the command again. or reboot, or kill the desktop and restart the desktop, not the whole machine. try do that in windows, when it happen you have to reboot

the purpose of the link is to show that i’m not alone in this. which is cool. or it just mean that i am one of those unix user

passwords

been reading an article on password cracking. thats right, the one on your computer. how they can do it.

http://www.wired.com/news/columns/0,72458-0.html?tw=wn_story_page_prev2

it is written by Bruce Schneier, an expert on computer security. and in this article there is this advice which:

So if you want your password to be hard to guess, you should choose something not on any of the root or appendage lists. You should mix upper and lowercase in the middle of your root. You should add numbers and symbols in the middle of your root, not as common substitutions. Or drop your appendage in the middle of your root. Or use two roots with an appendage in the middle.

finally there is a funny page about choosing password:

http://www.brunching.com/passwordguide.html

the day where i distracted by classical games,

you know sometime, i can be easily distracted by games, anygame. as long my computer can play it. sometime, i just like older game, me as usual like to collect a part of computer history. and have to play on emulator. well DUH.

here is a list of emulator that i have:
-the one that work:
kxmame(kde fronted for xmame and xmess)


this is one of my favourite. because it got my favourite game, metal slug. i collected the rom for metal slug super vehicle-001,metal slug 2, metal slug 3 and metal slug x. maybe i should get megaman too. maybe later.

on the other hand you will need the bios if wanted to play the game, but the configuration is easy.

the pros: easy configuration,huge supported game, and games is fun
the cons: you will need to dig out for the bios.

dgen
dgen is a emulator for sega genesis. which i happen to own, and been playing 2 games on it. jungle strike, and rocket knight adventure. simply because i legally own it.

the pro: game is pretty much playable, no configuration
the cons: some game may not run well, no graphical frontend

what don’t work, gngeo not sure how to configure it.

what is cool with all these emulator is that it is in the ubuntu repository. except the game which you can’t get. and the emulator can be found by apt-get.

virtualization fun?

one of my interest have been operating systems. when ever i have a chance i wil actually check out the kernel thread, or something similar. sometime i just download it and test it on vmware or QEMU.

so here i present 2 OS that i currently played with, TUDOS and minix.

1)TUDOS

tudos is an operating system develop from dresden operating system research, in germany.
it uses the L4 microkernel, and develop an liveCD that allow us to the OS. the group concentrated on security of the operating system and is able to port linux into a L4 microkernel.

so we can still use linux, but not KDE, while getting the best of microkernel.

what is not really working, the key layout sucks, and all the demo inside is just demo not showing the full fledge system, and sometime, it slows down.

2) MINIX3

minix is an operating system originally develop for education by andrew tannenbaum, and is released with a source code, with the text book, operating system design and implementation. while is not my university text book, i manage to find an older copy of the book, in the library. it is a microkernel OS, but unlike L4, the microkernel is for minix only.

i also have an interesting history with minix, because it is the first unix that i use, i have some exposure on it when i was 16, when i found a small unix book. not really able to use it until i got my own computer and good internet connection. and minix is able to run on bochs on windows, when i didn’t switch OS yet. because it is small anyway.

now minix is not limited to education anymore, minix 3 is develop from ground up into an operating system that can be used in production environment, with limited resource, while using the the best of microkernel. so the minix i am running now is not the minix i use when i first expose to minix(i think).

the best thing about minix is the source code that comes with it, linux do have the source code. but the minix code is smaller. maybe later i install xwindows to see the performance

me and the day with network monitoring

been spending a little time to find some networking tools. the set of tools range from traceroute to port scanner, from the one i can use to the one that i can’t, from the useful to the plain-useless(nonetheless interesting).

the one that i can use:
iptraf(check host and bandwith on the gateway),
tcpdump(it pretty much comes with a *nix)
nmap, my favourite portscanner,

the one that i’m stuck
nagios, always stuck with some error

mrtg, not sure how to use
netwox, too many option not sure how
iog

the interesting,
xtraceroute, it is traceroute that also trace the route on a globe. traceroute is useful, but tracing on a globe is not. but still it is interesting.

maybe i’ll add my updated set of tools here.

another adventure using alternative os


one of the first practical exposure to unix, other than cygwin, is minix. even that is because there is a bochs image for minix. later i use linux. then forgotten about it for a while until, not too long ago i use minix3 on qemu.

now, since i have vmware with me so i decide to find minix image for it. which i did find it.

the thing about minix is that, it got the source code that i understand. it is shorter than linux, and smaller too. interesting place to see how the OS work.

this is the only OS that i have study the source code a little, other than linux. which i also study alittle on my free time.

minix just give me a nostalgia, i think that is the word i guess. first to give me some insight how unix work. first unix i exposed on. let say i’m going to have fun.

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