Scrum

Scrum is an agile approach to software development. Scrum doesn't provides complete, detailed descriptions of how everything is to be done on the project, much is left up to the software development team. This is done because the team will know best how to solve the problem they are presented. 

Scrum relies on a self-organizing, cross-functional team. The scrum team is self-organizing in that there is no overall team leader who decides which person will do which task or how a problem will be solved. Those are issues that are decided by the team as a whole. The team is cross-functional so that everyone necessary to take a feature from idea to implementation is involved.

These agile development teams are supported by two specific individuals: a scrum master and a product owner.

Scrum projects make progress in a series of sprints, which are timeboxed iterations no more than a month long.

To read more about Scrum visit this site.

Snippets in Vim

A snippet is a piece of often-typed text that you can insert into your document using a trigger word followed by a <Tab>. To have this functionality in my Vim I use snipMate plugin.

 For a quick introduction, see this screencast:

Secrets of PostgreSQL Performance

Learn how to optimize your server to run PostgreSQL database:

 

Vim file navigation

To navigate through directories and to open files I use NERDTree plugin. The plugin opens small buffer on the left which contains the file system tree.

If you want to pull up NERDTree so it's always visible docked to the left of your Vim window you can type:

:NERDTree

Also NERDTree allows to modify the file system tree. Hit key 'm' and it will open menu with some option.

To refresh the file system tree simple hit key 'r'.

Recursive removal

Remove all files and directories (recursive removal):

rm -rf /tmp/foo

Remove all files from current directory use this command:

rm -f *

Vim configuration

To use vim, you should install vim package:

sudo apt-get install vim

If you prefer to use GUI based vim, you should install vim-gnome package:

sudo apt-get install vim-gnome

vim is a highly configurable editor. A list of files and their locations are given below.

• ~/.vimrc is the vim configuration file which vim reads on startup
• ~/.gvimrc is the gvim configuration file which gvim reads on startup. It's best to keep only gui specific settings here, as it will take preference over the settings in your .vimrc file.
• ~/.vim/ is the directory in which the user can add utility plugins, syntax highlighting plugins, and indent plugins.

Color

I prefer to use HSV color space instead of RGB because they better match how people perceive color. The HSV color space consist of three components: hue, saturation and value.

• Hue: The basic color in the color wheel, ranging from 0 to 360 degrees where both 0 and 360 degrees are red.
• Saturation: How pure (vs. dull) the color is, ranging from 0 to 100, where 100 is fully saturated and 0 is gray.
• Value: How bright the color is, ranging from 0 to 100, where 100 is as bright as possible and 0 is as dark as possible (black).

An example where color's value reduced by 20 (100, 80, 60):

See also this article in msdn to get more details.