/me on the net!

Setting up UserDir on Nginx

nospam@example.com (Anurag) — Wed, 18 Apr 2012 18:02:38 +0530

Nginx doesn't have mod_userdir like Apache, but the behavior can be emulated by the following configuration snippet.



# userdir simulation

location ~ /~([^/]+)($|/.*)$ {

  alias /home/$1/public_html$2;

  error_page 404 = @404;

  autoindex on;

}

location @404 {

  return 404;

}

Putting these location directives in a virtual host config section will let the virtual host publish user's public_html directories.

Tracing ruby programs with set_trace_func

nospam@example.com (Anurag) — Thu, 15 Dec 2011 00:34:38 +0530

At times you may need to trace a ruby program's execution flow. Ruby's set_trace_func comes handy there.

When saved in a file called trace.rb and executed with $ ruby trace.rb, it outputs

   2011-12-15 00:33:26 +0530 c-return trace.rb:3  set_trace_func   Kernel

   2011-12-15 00:33:26 +0530     line trace.rb:5                     

   2011-12-15 00:33:26 +0530   c-call trace.rb:5        puts   Kernel

   2011-12-15 00:33:26 +0530   c-call trace.rb:5        puts       IO

   2011-12-15 00:33:26 +0530   c-call trace.rb:5       write       IO

*** Hello World

   2011-12-15 00:33:26 +0530 c-return trace.rb:5       write       IO

   2011-12-15 00:33:26 +0530 c-return trace.rb:5        puts       IO

   2011-12-15 00:33:26 +0530 c-return trace.rb:5        puts   Kernel

What's new in Firefox 5!

nospam@example.com (Anurag) — Tue, 28 Jun 2011 18:12:15 +0530

Rotten tomatoes' rotten TOS

nospam@example.com (Anurag) — Sun, 20 Mar 2011 01:04:21 +0530

3 (b) No Conflicting Uses. You may not use the Flixster API to develop (or instruct any third party to develop) a service that may reasonably be deemed to be directly competitive with Flixster’s products and services, unless you have been specifically permitted to do so in a separate written agreement with Flixster prior to the undertaking of the development and launch of such service.

Dear Rotten Tomatoes, what's the point of launching these APIs then?

Convert videos for Android (Samsung Galaxy)

nospam@example.com (Anurag) — Tue, 22 Feb 2011 00:21:30 +0530

My Android phone doesn't support DivX/XviD. To play videos on it. I need to convert them to MP4. Taking a note for myself if I need it later.

$ ffmpeg -i input_video.avi -f mp4 -vcodec libx264 -acodec libfaac -s 400x240 -ab 128k output_video.mp4

400x240 is the phone's screen resolution.

[Edit] Good parameters for high quality MPEG4 encoding:

-mbd rd -flags +mv4+aic -trellis 2 -cmp 2 -subcmp 2 -g 300

Mumbai, Delhi, Pune, Ahmedabad - Autorickshaw Taxi fares

nospam@example.com (Anurag) — Thu, 26 Aug 2010 14:09:32 +0530

Rickshaw fares for Mumbai

Two months back Mumbai's autorickshaw and taxi drivers went on a strike, demanding a steep increase in fares. While earlier the fare calculation was simple, after the new fare structure came in place, autorickshaw fare calculations became relatively complex.

I started http://rickfare.com on the day new fares came into effect after seeing the new complicated fare structure. Over time, friends pitched in for their cities and I added New Delhi, Ahmedabad, Pune and Navi Mumbai. Today Rickfare.com is accessed by thousands of commuters over a wide variety of mobile devices including iPhone, BlackBerry, Android, HTC and assorted Nokia handsets.

I'd like to thank Ashish Mehta, Atul Jha, Kartik Mistry and Kamaleshwar for helping out with auto fares of their cities

Extract mp3 audio from a video clip using mencoder

nospam@example.com (Anurag) — Mon, 17 May 2010 13:52:44 +0530

This post is a note for self. I always keep forgetting how to extract mp3 audio file from any video clip.

$ mencoder videofile.avi -of rawaudio -oac mp3lame -ovc copy -o audio-output.mp3

This is an awesome companion to the youtube video downloader - youtube-dl.py

Server sent unexpected return value (502 Bad Gateway) in response to COPY request

nospam@example.com (Anurag) — Wed, 21 Apr 2010 10:46:14 +0530

During the recent server migration, I shifted svn services from http to https. Everything seemed to work fine, except for this error while creating branches.

frodo$ svn cp https://svn.xinh.org/svn/project/UberCool/trunk https://svn.xinh.org/svn/project/UberCool/branches/1.0

svn: Server sent unexpected return value (502 Bad Gateway) in response to COPY request for '/svn/project/!svn/bc/15/UberCool/trunk'

svn: Your commit message was left in a temporary file:

svn:    'svn-commit.tmp'

frodo$

Googling around a bit helped. I'm using HTTPS over Apache + dav_svn module. This issue can be fixed by enabling mod_headers module in Apache and adding the following line at the end of your VirtualHost.

RequestHeader edit Destination ^https http early

Trek to Sankshi fort

nospam@example.com (Anurag) — Tue, 24 Nov 2009 11:50:59 +0530

After a long long time I got a chance to go trekking again on 22 Nov. Sankshi fort is located near Alibag, off the Mumbai Alibag highway. Difficulty level is easy to moderate, but it involves about an hour of walking.

Article on Sankshi fort from Maharashtra government website.

The name Sankshi is said to have been derived from a chief named Sank who is traditionally believed to have been the lord of the fort. See below.] (T. Pen) also known as Badr-ud-din, or Darghaca Killa from a tomb or dargah of the saint Badr-ud-din at its foot, lies within the limits of Nidivali village about five miles north-east of Pen. read more...

We assembled at Panvel ST depot at 7AM, waiting for others to join in, and finally left Panvel at 9:15 after having breakfast at a restaurant across the road. Since the bus started from Panvel, everyone got seats, and I dozed off to sleep.

We got down at Balavali Phata and marched towards saint Badr-ud-din's dargaah. The route is cool and covered with dense trees, but full of giant spider webs. The photographers among us took half an hour to capture the arachnids and buffaloes on camera.

We reached dargaah in less than 2 hours, relaxed and moved towards the Sankshi hill. There's a GI water pipe that runs to dargaah at the base of the hill from a water cistern at the top of the hill. Some walk in the jungle, struggling with the itchy bushes, a rock patch and we were at the top. After exploring for half an hour, we came back down to have lunch at the old dargaah structure that looked beautiful and wise in white color.

It was a nice little trek (microtrek ) and we were back to panvel around 6PM, without feeling tired at all! Complete pictures from trek to sankshi fort are available in my flickr set.

Trek to Gorakhgad and Malshej ghat

nospam@example.com (Anurag) — Fri, 10 Jul 2009 11:24:15 +0530

Trek to Gorakhgad can be counted as one of the most luxurious treks in the Sahyadri range. We left Mumbai on Saturday 4th July 2009 at 2300Hrs. It rained heavily whole day so many participants dropped out at the last minute since the train services were badly affected. As a result, the bus we hired had several seats empty and lots of place for us to sleep.

We took NH-222 from Kalyan and stopped at Dehri. Trek began at 3AM in the moonlit sky with torches. In about 2 hours we reached the base of Gorakhgad mountain and started climbing upwards in the light of dawn.

After exploring the top, taking pictures, having breakfast and walking in the clouds we were back to the highway before noon. After Gorakhgad we switched to picnic mood and started our trip to the scenic Malshej ghat.

It was an amazing trip and it seems i've taken several pictures that can make it to next year's calendar. The complete pictures from trek to gorakhgad and malshej ghat are available in my flickr set.

todo item ticked off!

nospam@example.com (Anurag) — Fri, 26 Jun 2009 14:28:10 +0530

Another TODO item ticked off a while back! It wasn't what I had originally planned, but the goal has been achieved nevertheless.

I didn't know I made myself a bucket list, long before watching the movie.

MovieAB movie summary

The Bucket List

Movie info by MovieAB

the sixty one

nospam@example.com (Anurag) — Mon, 20 Apr 2009 14:36:25 +0530

I'm on love with The Sixty One for the past one month. The layout & presentation, the indie music - its all very smooth and nicely done. No matter which section of site you visit or what link you click, the music keeps playing on. Give it a try!

MovieAB - A tiny movie mashup

nospam@example.com (Anurag) — Mon, 23 Feb 2009 19:10:16 +0530

Announcing MovieAB -- a mashup of freely available movie data APIs from around the internet. A catalog of over 170000 movie titles, tv series, programs available on DVD, actors and directors is available at the moment, and keeps growing every day.

Try a sample page for the movie Spider-Man 2. Every movie info page displays DVD box-art image, netflix user ratings, genres, a short summary, cast, awards and nominations and movie reviews from NYTimes if its available.

MovieAB came up as an idea to implement Netflix's API, after they decided to open up their vast catalog of movie data to third party developers. This was soon followed up with New York Times' decision to open up their comprehensive movie reviews api to third party developers. I can't thank them enough.

And, what's this AB? Well, I have no idea. This was the smallest domain name available. iMovie, gMovie, LiveMovie are all taken

Many thanks to Kamaleshwar for designing this clean and simplistic logo. More artwork requests from me are coming your way! If you liked the application, have suggestions for improvement, criticisms, bug reports or general feedback - write in to feedback (at) movieab.com.

MovieAB movie summary

Spider-Man 2

Movie info by MovieAB

USD INR exchange rates

nospam@example.com (Anurag) — Mon, 05 Jan 2009 15:48:18 +0530

I keep looking at stuff and try guessing its price in INR. Look around for calculator, check USD exchange rate and punch it in.

#!/usr/bin/env ruby

require 'rubygems'

require 'hpricot'

require 'open-uri'



FPAGE = 'http://finance.yahoo.com/q?s=USDINR=X'

XPATH = '/html/body/div/div[2]/div[4]/div[2]/div/div[2]/table/tr/td/big/b/span/'



amount = (ARGV.length == 1) ? ARGV[0].to_f : 1

amount = 1 if amount == 0



doc = Hpricot(URI.parse( FPAGE ).read)

element = doc.search( XPATH )

exchange_rate = element[0].to_s.to_f

puts "#{amount} USD = #{amount * exchange_rate} INR"

Now i no longer have to. Just running $ usdinr 197.21 gives the amount in INR. Save this file in /usr/bin/usdinr and give execute permissions.

[Update 2009-02-19: Updated the script with new XPath]
[Update 2010-12-08: Updated the script with new Yahoo finance page and XPath]

Nominations

nospam@example.com (Anurag) — Sat, 03 Jan 2009 03:00:44 +0530

Your votes are invited for selecting the best photos from this collection of pictures i took in year 2008. Last year was very eventful and i ended up with filling my flickr account like its no one's business.

To vote for the pictures you like, simply visit the Nominees collection and vote for the photo by marking it as a favourite or leaving a comment there. I'm biased, all food pictures got nominated automatically.