rent page 16 - Dave's Blog

California Trip

2007 Dec 23, 11:18Sarah and I went down to California at the end of last month for a Thanksgiving visit with my parents. We visited the famous Monterey Bay Aquarium (fun fact: the aquarium scenes in Star Trek IV were filmed here) and saw many jelly fish. We wandered around Capitola where we visited many local shops and ate on the wharf. We shopped in Carmel and ate at the Forge in the Forest (fun fact: Clint Eastwood was the mayor of this city in the late 80s). We visited the Santa Cruz Beach Boardwalk which was very cold and closed.
My parents took us out to dinner on the first night and the rest of the nights we ate dinner at their house. They had the Shelton's over and I got to see Chris and Alison. It was fun to talk with them and catch up since its been quite a while since I'd seen them.
We stayed in the lovely beach house of our family friend's the Goodwins. My parents have been helping them fix it up and decorate it and it looks great. It was quite a treat staying in a house right on the ocean. Also of note, this was the first trip on which I was old enough to rent the car and accordingly I did all of the driving. This trip was very fun and relaxing.aquarium friends parents personal beach california vacation

Guy on highway

2007 Nov 4, 11:20This weekend Sarah and I went to Tariq's house warming party in Issaquah and then to Seattle for Jon's going away party at Pike's Pub. On the drive over, just after getting through traffic on I-5 South, I saw emergency vehicles lights on the North bound side and suddenly found my lane stopped. I found out why when a man ran from the left most lane to my lane the right most, then darted left one lane and back right again. Cars started leaving my lane and I could see the man now lounging on the pavement in front of a jeep. Apparently not hurt, he got up and started walking down the highway. He didn't appear to be in his right mind and after walking by our car Sarah reported it to 911. The rest of the night went on as normal and I had fun with Jon and his friends. It'll be sad to see him go next week.nontechnical

Why I Feel Old

2007 Oct 12, 3:20And now to fit in better with the rest of the emo kids on LJ, in no particular order here are some reasons why I feel old:

• I've attended friends weddings sorted chronologically by when I met them: Lucas from high school, followed by Carissa from college, and then Palak from Microsoft.
• I rarely get carded for alcohol.
• Jon's moving to Germany soon -- this time permanently. He's already started the process of getting rid of possessions he's not taking with him like his car and TV. However, after doing so he couldn't maintain his smug "I don't even own a TV" attitude and ended up trading me my small CRT TV (as mentioned previously) for his DDR pads and games. A good trade for both since we were each looking to dump these items. So far I've only convinced Sarah to try DDR once with me. Somehow I've gotten much worse at something I wasn't that great at to begin with.
• I have business cards.
• I still have semi-monthly nightmares in which I'm taking a Linear Algebra course for which I haven't studied or done homework in years. This differs from the more frequent nightmares I had immediately after finishing that series of classes in which I was taking the final and it was all on the one topic I didn't study. In reality, the prof. had done his PhD work on this one topic and I, correctly betting it wouldn't appear on the final, didn't study it. Apparently this was a traumatic bet for me to make given the wake of destruction left on my dreams.
• I have to remind myself that 2005 was two years ago.

personal nontechnical

GPS

2007 Sep 18, 2:16Sarah got me the Garmin StreetPilot c580 for my birthday last month. I really like this because its a small device that makes my life easier without me having to learn anything new. Just the way tech. should be.

The device gets current weather, traffic, and movie times. The information is sent via FM and received via the FM receiver in the cigarette lighter power adapter of the GPS device. MSN sends out this info and I get a free one year subscription. In addition to taking traffic info into account when planning my route it will estimate the number of minutes I'm going to spend in traffic. Just knowing how long I might be in traffic somehow makes it more bareable.

The other day while driving for dinner I got a call. I got my phone out of my pocket and answered it. I heard Jon's saying 'Hello' under my passenger seat. After a moment of confusion I remembered that the GPS device also acts as a bluetooth hands free phone adapter and that it was under my seat.gps garmin personal traffic nontechnical

Ad Blocking built into IE7

2007 Sep 11, 2:55There's been some news recently on some guy hating on FireFox for its ad-blocking.

On a similar note here's a fun tip for IE7 users I got from Eric. You can get decent ad-blocking in IE7 by putting ad servers in the restricted zone. By default script inclusion is blocked between different zones so you can put domains that serve up ads in your restricted zone after which, normal internet zone sites won't be able to include script from them. This covers most of the ads I run into these days.

I use Fiddler to figure out the domains that are serving up ads which incidentally also has an ad-blocking^H^H^H^H general purpose content blocking plugin. Here's a screenshot of Slashdot and ArsTechnica from my browser. Notice the large blank areas in the screenshots:
ad-blocking personal ad ie7 technical browser tip ie

Which which - Batch File Hackiness

2007 Aug 9, 5:41To satisfy my hands which have already learned to type *nix commands I like to install Win32 versions of common GNU utilities. Unfortunately, the which command is a rather literal port and requires you to enter the entire name of the command for which you're looking. That is 'which which' won't find itself but 'which which.exe' will. This makes this almost useless for me so I thought to write my own as a batch file. I had learned about a few goodies available in cmd.exe that I thought would make this an easy task. It turned out to be more difficult than I thought.

for /F "usebackq tokens=*" %%a in ( `"echo %PATH:;=& echo %"` ) do (
    for /F "usebackq tokens=*" %%b in ( `"echo %PATHEXT:;=& echo %"` ) do (
        if exist "%%a"\%1%%b (
            for  %%c in ( "%%a"\%1%%b ) do (
                echo %%~fc
            )
        )
    )
)

The environment variables PATH and PATHEXT hold the list of paths to search through to find commands, and the extensions of files that should be run as commands respectively. The 'for /F "usebackq tokens=*" %%a in (...) do (...)' runs the 'do' portion with %%a sequentially taking on the value of every line in the 'in' portion. That's nice, but PATH and PATHEXT don't have their elements on different lines and I don't know of a way to escape a newline character to appear in a batch file. In order to get the PATH and PATHEXT's elements onto different lines I used the %ENV:a=b% syntax which replaces occurrences of a with b in the value of ENV. I replaced the ';' delimiter with the text '& echo ' which means %PATHEXT:;=& echo% evaluates to something like "echo .COM& echo .EXE& echo .BAT& ...". I have to put the whole expression in double quotes in order to escape the '&' for appearing in the batch file. The usebackq and the backwards quotes means that the backquoted string should be replaced with the output of the execution of its content. So in that fashion I'm able to get each element of the env. variable onto new lines. The rest is pretty straight forward.

Also, it supports wildcards:

C:\Users\davris>which.cmd *hi*
C:\Windows\System32\GRAPHICS.COM
C:\Windows\System32\SearchIndexer.exe
D:\bin\which.exe
D:\bin\which.cmd

which cmd technical batch for

Canadian Wedding

2007 Jul 15, 5:08This previous weekend Sarah and I went to Canada for my friends Palak and Meghal's wedding. Our five day stay took us on the route from Toronto, to Burlington (for the wedding), and then Niagra.

In Toronto we visited the CN Tower, the ROM, and the Bata Shoe Museum. We generally acted like tourists walking around taking photos of things, putting on sun block, and not saying 'eh'. But we could have been worse like the drunk American college students in front of us in line for the CN Tower asking the guide if the CN Tower is taller than the Stratosphere in Las Vegas. We stumbled upon the Toronto Outdoor Art Exhibit which was really interesting. Sarah in particular recalls the cute stuffed animal monsters.

After Toronto we drove to Burlington where Palak and Meghal's wedding would take place. We got up early and made it on time to the wedding which was lovely. I hadn't attended an Indian wedding previously so it was a new experience for me. During the ceremony the child in front of me kept peeking over her parent's shoulder and staring at me. It lasted all day with a break after lunch during which we drove around and experienced small town Ontario. After the break cousins performed dances for Palak and Meghal and then we all danced the night away until the wee hours.

In Niagra we stayed in a hotel room with a falls view which was lovely. We went on the Maid of the Mist tour that takes tourists right up to the falls in a boat and drenches them. We also went on the Behind the Falls tour which was not as fun. In both we are given rain coats which are essentially glorified plstic trash bags. For dinner we ate in the hotel restaurant which had a lovely view of the falls. At night the falls are lit up in various colors with gigantic lights.niagra wedding personal toronto nontechnical

Backup Notes

2007 Jul 13, 8:30I bought an external backup drive a few weekends ago. I've previously setup a Subversion repository so I decided to move everything into the repository and then back it up. So in went the contents of all of my %USERPROFILE% and ~ directories with a bit of sorting and pruning. Not too much though given its much easier to dump in everything and search for what I want then to take the time to examine and grade each file. What follows are the notes I took while setting this up. It takes me a bit of time to look up the help on each command so I figure I'll write it all down here for the benefit of myself and potentially others...

Setting Up the Backup Drive For Linux
I first changed the filesystem on the drive to ext3. I plugged it into my USB2.0 port and ran fdisk:

sudo fdisk /dev/sda

Useful commands I used to do this follow mostly in order:

m

help

p

print current partitions

d

delete current partition

n

create new partition (I used the defaults)

w

write changes and exit

Then I formatted for ext3.

sudo mkfs.ext3 /dev/sda1

I made it easy to mount:

sudo vim /etc/fstab
# added line to end:
/dev/sda1 /media/backup ext3 rw,user,noauto 0 0

I setup the directory structure on the disk

mount /media/backup
sudo mkdir /media/backup/users
sudo mkdir /media/backup/users/dave
sudo chown dave:dave /media/backup/users/dave

After all that its easy to make a copy of the Subversion repository:

mount /media/backup
cp -Rv /home/dave/svn /media/backup/users/dave/
umount /media/backup

Next on the agenda is to add a cron job to do this regularly.

Subversion Command Reference
On a machine that has local access to the Subversion repository you can check out a specific subdirectory as follows using the file scheme:

svn co file:///home/dave/svn/trunk/web/dave%40deletethis.net/public_html

Note also that although one of my directories is named 'dave@deletethis.net' Subversion requires the '@' to be percent-encoded.
Other useful subversion commands:

svn help

help

svn list file:///home/dave/svn/

list all files in root dir of svn depot

svn list -R file:///home/dave/svn/

list all files in svn depot

svn list -R file:///home/dave/svn/ | grep \/$

list all directories

svn status

List status of all files in the working copy directory as in - modified, not in repository, etc

svn update

Brings the working copy up to date wrt the repository

svn commit

Commit changes from the working copy to the repository

svn add / move / delete

Perform the specified action -- occurs immediately

Setting up Windows Client for Auto Auth into SVN
When using an SVN client on Windows via svn+ssh its useful to have the Windows automatically generate connections to the SVN server. I use putty on my Windows machines so I read the directions on using public keys with putty.

putty.exe dave@deletethis.net
cd .ssh
vim authorized_keys # leave the putty window open for now
puttygen.exe
Click the 'generate' button
Move the mouse around until finished
Copy text in 'Public key for pasting into OpenSSH authorized_keys file:' to putty window & save & close putty window
Enter Key passphrase & Comment in puttygen
Save the private key somewhere private
pageant.exe
'Add Key' the private key just saved.

Checking out using Tortoise SVN
On one of my Windows machines I've already installed Tortoise SVN. Checking out from my SVN repository was really easy. I just right clicked in Explorer in a directory and selected "SVN Checkout...". Then in the following dialog I entered the svn URI:

svn+ssh://dave@deletethis.net/home/dave/svn/trunk/web/dave%40deletethis.net/public_html/

Note again that the '@' that is part of the directory name is percent-encoded as '%40' while the '@' in the userinfo is not.

Windows Command Line Check Out
On my media center I didn't want to install Tortoise SVN so rather I used the command line tool. I setup pageant like before the only difficulty was getting the SVN command line tool to use putty. With the default configuration you can use the SVN_SSH environment variable to point at a compliant SSH command line tool. The trick is that its interpreted as a backslash escaped string. So I set mine thusly:

set SVN_SSH=C:\\users\\dave\\bin\\putty\\plink.exe

The escaping solved the vague error I received about not being able to create the tunnel.backup technical personal windows svn linux subversion

Second Life Translator

2007 Jul 4, 10:58Hackdiary
I really enjoy reading Matt Biddulph's blog hackdiary. An entry some time ago talked about his Second Life flickr screen which is a screen in Second Life that displays images from flickr.com based on viewers suggested tags. I'm a novice to the Second Life scripting API and so it was from this blog post I became aware of the llHTTPRequest. This is like the XMLHttpRequest for Second Life code in that it lets you make HTTP requests. I decided that I too could do something cool with this.

Translator
I decided to make a translator object that a Second Life user would wear that would translate anything said near them. The details aren't too surprising: The translator object keeps an owner modifiable list of translation instructions each consisting of who to listen to, the language they speak, who to tell the translation to, and into what language to translate. When the translator hears someone, it runs through its list of translation instructions and when it finds a match for the speaker uses the llHTTPRequest to send off what was said to Google translate. When the result comes back the translator simply says the response.

Issues
Unfortunately, the llHTTPRequest limits the response size to 2K and no translation site I can find has the translated text in the first 2K. There's a flag HTTP_BODY_MAXLENGTH provided but it defaults to 2K and you can't change its value. So I decided to setup a PHP script on my site to act as a translating proxy and parse the translated text out of the HTML response from Google translate. Through experimentation I found that their site can take parameters text and langpair queries in the query like so: http://translate.google.com/translate_t?text=car%20moi%20m%C3%AAme%20j%27en%20rit&langpair=fr|en. On the topic of non US-ASCII characters (which is important for a translator) I found that llHTTPRequest encodes non US-ASCII characters as percent-encoded UTF-8 when constructing the request URI. However, when Google translate takes parameters off the URI it only seems to interpret it as percent-encoded UTF-8 when the user-agent is IE's. So after changing my PHP script to use IE7's user-agent non US-ASCII character input worked.

In Use
Actually using it in practice is rather difficult. Between typos, slang, abbreviations, and the current state of the free online translators its very difficult to carry on a conversation. Additionally, I don't really like talking to random people on Second Life anyway. So... not too useful.personal translate second-life technical translator sl code google php llhttprequest