An attempt to resuscitate cbrowser 0.8

Posted September 18, 2010 by narcissist168
Categories: hacking

I’ve had a number of issues with cbrowser, the graphical frontend for cscope. It doesn’t work on my system running Ubuntu 10.04 where tcl version 8.4.19 is installed (info patchlevel in tcl shell); don’t know if there’s a separate version for the tk component. Two glaring problems were encountered when attempting to examine the database generated from gnucash source code:

  1. Call tree functionality is broken
  2. Syntax highlighting caused the program (wish process) to consume 100% CPU time on a certain source file (specifically “gnucash-bin.c”)

The latest version of cbrowser that I was able to retrieve from a repository (don’t recall which) was labelled cbrowser_0.8-6_all, marked unstable. Diffing the version obtained from sourceforge, comparing two critical files, with the 0.8-6 version did not reveal any significant change in the code, at least I was not able to spot any changes. But the really bad news was that cbrowser is written in tcl, a language I had never heard of till last week. Before giving up, I decided to take a crack at it anyway, being a stubborn git and all. Learn just enough tcl and then hack away. With a huge amount of luck, I think I managed to recover some functionality but wonder how much of cbrowser is broken.

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Ubuntu 10.04 on Asus Eee PC 1101HA

Posted September 17, 2010 by narcissist168
Categories: ubuntu

Managed to get Lucid Lynx working on the 1101HA. Wireless connectivity worked out of the box. Installed the poulsbo drivers from ppa as described in [1], summarized here

sudo add-apt-repository ppa:gma500/ppa && sudo apt-get update
sudo apt-get install poulsbo-driver-2d poulsbo-driver-3d poulsbo-config

Resolution obtained = 1366 x 768. Some issues remained, for example, attempting to switch to tty1 (or tty2) logged me out of the session altogether; flickering before the login screen appears. But I can live with these minor problems.

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Twenty-seven inch beauty

Posted September 12, 2010 by narcissist168
Categories: mac

A 27″ iMac sits next to the two monitors of my Linux system. I wanted to use that smashingly good screen real estate to “host” — probably not the right term but I wasn’t exactly sure what I wanted in the beginning — some application windows. Using synergy [1], I was able to send keyboard and mouse commands to the mac from the Ubuntu machine.

At first I tried VNC. Didn’t need anything extra on either system; “vnc://172.16.0.1” from Finder->Go->Connect to Server in OSX and allowing connections through System->Preferences->Remote Desktop in Ubuntu, making sure to require a password for entry (the first time I tried without a password it refused to connect). The outputs of both monitors were displayed beautifully on the iMac but it was horribly slow. I also had to disable synergy because of poor input response; I wonder if the application was confused about where the input was coming from or maybe it wasn’t designed for the madness I had conjured.

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The resolving host issue

Posted September 12, 2010 by narcissist168
Categories: networking

I’m using Ubuntu 10.04 and everything seemed fine after installation. One of the very first things that I did was to configure the wireless connection to work with the router at home. Everything seemed fine; I installed Elementary, the Faenza icon set, firefox addons to get the rid of title and menu bars, tweaked this, tweaked that and I felt that it was all coming together sweetly. At this point I decided to setup the ethernet connectivity to an iMac by enabling the connection using Network Manager and specifying a static IP. That’s when the troubles began.

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Two monitor setup

Posted September 11, 2010 by narcissist168
Categories: ubuntu

Averagepenguin [1] describes a method of moving windows between two monitors. I was hit by two gotchas:

  • at the font size and screen resolution that I use and with my poor eyesight, the backticks (`)  looked like single quotes ( ‘ ). Since I had no knowledge of the  command substitution concept [2] (being a noob and all), the xdotool command didn’t work. I was puzzled. In the end I took a wild guess: maybe ‘ was really ` and it worked. Sometime later I grew suspicious, went back to the site and increased the font size significantly, lo and behold it was very obvious.
  • in the bash script, we need spaces around the brackets [ ], otherwise it wont work. See [3].

[1] http://averagepenguin.com/?p=266
[2] http://en.wikipedia.org/wiki/Command_substitution
[3] http://www.linuxconfig.org/Bash_scripting_

Learning curve = brick wall

Posted September 11, 2010 by narcissist168
Categories: programming

So Gnucash is written in C, I think but there are parts of it that are constructed in a language called Scheme, which in my esteemed noobness, have never heard of. I have no idea why there is a mixture of the two, maybe it’s written in an faq somewhere on their website but right now I’m happily distracted at finding out what the hell Scheme looks like.

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Using the find tool

Posted September 11, 2010 by narcissist168
Categories: linux

Needed to use the cscope tool
– required list of files

Couldn’t be bothered to RTFM. Should be header files be included in the cscope database?
– First example in [1] item (3) doesn’t help if both the ‘c’ and ‘h’ files are to be included.
– Second more complex example, last line gives clue.
– modified the regular expression in the option to:   -name “*.[ch]”

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