/var/ericksrv.net/weblog

So you like to cook things from scratch.

mv postgresql-8.3.11.tar.gz /usr/local/src
tar xvfz postgresql-8.3.11.tar.gz
cd postgresql-8.3.11
./configure
gmake
gmake install
adduser postgres
mkdir -p /usr/local/pgsql/data

admin Uncategorized

I got this error while playing around with ZSI. The solution is as simple as installing PyXML.

http://pyxml.sourceforge.net/

For Ubuntu or Debian users a sudo apt-get install python-xml will do the trick. If this doesn’t work for you most likely you have multiple instances of python in your system. Also make sure that the package is installed or included in your python path variable.

erick@mac01 ~ $ python2.4
Python 2.4.6 (#2, Mar 19 2009, 10:00:53)
[GCC 4.3.3] on linux2
Type “help”, “copyright”, “credits” or “license” for more information.
>>> import sys
>>> print sys.path
['', '/usr/lib/python2.4', '/usr/lib/python2.4/plat-linux2', '/usr/lib/python2.4/lib-tk', '/usr/lib/python2.4/lib-dynload', '/usr/local/lib/python2.4/site-packages', '/usr/lib/python2.4/site-packages', '/usr/lib/site-python']
>>>

admin Programming, Python Python, ZSI

Here is a sample code that will allow you to make web services call that requires HTTP basic authentication.

Assuming we have generated TimeService_services.py and TimeServices_types.py files  using wsdl2py we can do the following

loc = TimeServiceLocator()
kw = {'tracefile': sys.stdout}     # print output to the screen
proxy  = loc.TimeServicePort(url='http://localhost/TimeService.wsdl', ** kw)

proxy.binding.SetAuth(AUTH.httpbasic, 'username', 'password')

# make ws call

admin Python Python, Web Services, ZSI

The sound in my ubuntu 9.04 stopped working correctly, and instead of playing a song, all I heard was static.

I tried a number of different things such as restarting pulseaudio and reloading the kernel modules. But the problem was that the PCM mixer’s volume was muted, and a way to change it is with alsamixer.

 alsamixer -Dhw

admin GNU/Linux, Ubuntu, troubleshoothing troubleshoothing

Sometimes the keyboard stops working properly when I run windows inside a VMWare virtual machine. The key bindings gets all screwed up and the the cap locks, shift, and ctrl keys stop working.

As a workaround you can just execute setxkbmap in to remap the the keyboard.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/195982

admin GNU/Linux, Ubuntu

These are the VIm commands I found most useful for coding.

Find And Replace

Indentation

Syntax highlighting

admin GNU/Linux, Programming, Tools linux, Programming, Tools, vim

Here is a way of retrieving the a query string parameter from a URL. (e.g. http://localhost/app/details.faces?userId=1)

HttpServletRequest request = (HttpServletRequest) FacesContext.
                                        getCurrentInstance().
                                        getExternalContext().
                                        getRequest();
String ID = request.getParameter("userId");

admin JSF, Java, Programming

libnotify allows a program send a notification to your desktop through notification-daemon.

To be able to use it in your code you’ll need the appropriate header files and shared library to link against which can be found in the libnotify-dev package.

Here is a sample program taken from the libnotify package source.

#include <libnotify/notify.h>
#include <stdio.h>
#include <unistd.h>

int main(int argc, char * argv[] )
{
    NotifyNotification *n;  

    notify_init("Basics");

    n = notify_notification_new ("Foo",
                                 "Bar",
                                  NULL, NULL);
    notify_notification_set_timeout (n, 5000); // 5 seconds

    if (!notify_notification_show (n, NULL))
    {
	fprintf(stderr, "failed to send notificationn");
	return 1;
    }

    g_object_unref(G_OBJECT(n));

    return 0;
}

Alternatively, here is the same program in python.

import pynotify
pynotify.init(’foo’);
pynotify.Notification(’foo’, ‘bar’).show()

admin C/C++, GNU/Linux, Programming, Python C/C++, libnotify, linux, Python

w00t! First post.

admin Uncategorized