Free to create your own software for linux

Create CVSup is a script that will create a cvsup server mirror for FreeBSD, NetBSD, and OpenBSD.

Create CVSup script has been tested and is known to work under FreeBSD, NetBSD, and OpenBSD.

create Image is an amarok script that can create an image of the current playlist and save the files to an iso image.

The iso image is found in the respective home folders.

Create your own Viking chieftain (or chieftess), sail on quests to foreign places, challenge other online players to battle and then go spend your loot on more Viking gear!

Enhancements:

• Number of players on each island shown on the Hall map.
• Players can create their own rooms in the Hall.
• The Lur Blaster will no longer lose energy if he is stunned while playing a tune.
• Initial cease-fire period reduced in treasure games to avoid tower axemen rushing.

Requirements: Java 2 Standard Edition Runtime Environment

BruteFIR is a software convolution engine, a program for applying long FIR filters to multi-channel digital audio, either offline or in realtime. BruteFIRs basic operation is specified through a configuration file, and filters, attenuation and delay can be changed in runtime through a simple command line interface.
The FIR filter algorithm used is an optimised frequency domain algorithm, partly implemented in hand-coded assembler, thus throughput is extremely high. In realtime, a standard computer can typically run more than 10 channels with more than 60000 filter taps each.
Through its highly modular design, things like adaptive filtering, signal generators and sample I/O are easily added, extended and modified, without the need to alter the program itself.
Main features:
- Designed for realtime filtering of HiFi quality digital audio
- Up to 256 inputs and 256 outputs
- Input/output provided by external modules for maximum flexibility
- Default I/O modules provide support for sound cards and files
- Access multiple I/O modules (= several sound cards / files) at the same time
- 8 - 24 bit audio at any rate supported by sound cards
- Easy-to-use C language API to create your own I/O modules, for example to support more file formats, other sound card APIs, or generate test signals
- Mix/copy channels before and/or after filtering
- Cascade filters or build complex filter networks
- Simple C language API to create logic modules, to add new functionality
- Create your own logic module, for example to do adaptive filtering
- Provided is a logic module which implements a CLI accessible through telnet to manage runtime settings, and a dynamic equalier.
- Toggle/change filter in runtime
- Alter attenuation for each individual input and output in runtime
- Alter delay for each individual input and output in runtime
- Filter length limited only by processor power and memory
- Typical filter lengths are in the range 2048 - 262144 taps
- Reasonable low I/O-delay (typically 200 ms)
- Fixed I/O-delay, thus possible to sample-align with other processors
- Cross-fade for seamless filter coefficient changes.
- Redithering of outputs (HP TPDF)
- Overflow protection and monitoring
- 32 or 64 bit floating point internal resolution.
- Supports multiple processors
A few examples of applications where BruteFIR could be a central component:
- Digital crossover filters
- Room equalisation
- Cross-talk cancellation
- Wavefield synthesis
- Auralisation
- Ambiophonics
- Ambisonics
Among these, room equalisation and auralisation needs the longest FIR filters in the common case. Many applications can do with quite short filters actually, but the thing is that you will probably not need to compromise on the filter lengths when you use BruteFIR, even when sample rates go up.
However, BruteFIR is pretty useless by itself, since it is only a FIR filter engine. It does not provide any filter coefficients, thus it is not a filter design program. Also, due to its relatively high I/O-delay, BruteFIR is most suited for applications when the input signal is not live.

B::Generate is a Perl module which you can create your own op trees.


SYNOPSIS

use B::Generate;
# Do nothing, slowly.
CHECK {
my $null = new B::OP("null",0);
my $enter = new B::OP("enter",0);
my $cop = new B::COP(0, "hiya", 0);
my $leave = new B::LISTOP("leave", 0, $enter, $null);
$leave->children(3);
$enter->sibling($cop);
$enter->next($cop);
$cop->sibling($null);
$null->next($leave);
$cop->next($leave);

# Tell Perl where to find our tree.
B::main_root($leave);
B::main_start($enter);
}

WARNING

This module will create segmentation faults if you dont know how to use it properly. Further warning: sometimes I dont know how to use it properly.

There are lots of other methods and utility functions, but they are not documented here. This is deliberate, rather than just through laziness. You are expected to have read the Perl and XS sources to this module before attempting to do anything with it.
Patches welcome.

Malcolm Beatties B module allows you to examine the Perl op tree at runtime, in Perl space; its the basis of the Perl compiler. But what it doesnt let you do is manipulate that op tree: it wont let you create new ops, or modify old ones. Now you can.
Well, if youre intimately familiar with Perls internals, you can.

B::Generate turns Bs accessor methods into get-set methods. Hence, instead of merely saying

$op2 = $op->next;

you can now say

$op->next($op2);

to set the next op in the chain. It also adds constructor methods to create new ops. This is where it gets really hairy.

new B::OP ( type, flags )
new B::UNOP ( type, flags, first )
new B::BINOP ( type, flags, first, last )
new B::LOGOP ( type, flags, first, other )
new B::LISTOP ( type, flags, first, last )
new B::COP ( flags, name, first )

In all of the above constructors, type is either a numeric value representing the op type (62 is the addition operator, for instance) or the name of the op. ("add")
(Incidentally, if you know about custom ops and have registed them properly with the interpreter, you can create custom ops by name: new B::OP("mycustomop",0), or whatever.)

first, last and other are ops to be attached to the current op; these should be B::OP objects. If you havent created the ops yet, dont worry; give a false value, and fill them in later:

$x = new B::UNOP("negate", 0, undef);
# ... create some more ops ...
$x->first($y);

In addition, one may create a new nextstate operator with

newstate B::op ( flags, label, op)

in the same manner as B::COP::new - this will also, however, add the lineseq op.
Finally, you can set the main root and the starting op by passing ops to the B::main_root and B::main_start functions.

This module can obviously be used for all sorts of fun purposes. The best one will be in conjuction with source filters; have your source filter parse an input file in a foreign language, create an op tree for it and get Perl to execute it. Then email me and tell me how you did it. And why.

Linux From Scratch (LFS) is a project that provides you with the steps necessary to build your own custom Linux system.
There are a lot of reasons why somebody would want to install an LFS system. The question most people raise is "why go through all the hassle of manually installing a Linux system from scratch when you can just download an existing distribution?". That is a valid question which I hope to answer for you.
The most important reason for LFSs existence is teaching people how a Linux system works internally. Building an LFS system teaches you about all that makes Linux tick, how things work together, and depend on each other. And most importantly, how to customize it to your own taste and needs.
One of the key benefits of LFS is that you are in control over your system without having to rely on somebody elses Linux implementation. You are in the drivers seat now and are able to dictate every single thing such as the directory layout and boot script setup. You will also know exactly where, why and how programs are installed.
Another benefit of LFS is that you can create a very compact Linux system. When you install a regular distribution, you end up installing a lot of programs you probably would never use. Theyre just sitting there taking up (precious) disk space. Its not hard to get an LFS system installed under 100 MB. Does that still sound like a lot? A few of us have been working on creating a very small embedded LFS system. We installed a system that was just enough to run the Apache web server; total disk space usage was aproximately 8 MB. With further stripping, that can be brought down to 5 MB or less. Try that with a regular distribution.
If we were to compare a Linux distribution with a hamburger you buy at a supermarket or fast-food restaurant, you would end up eating it without knowing precisely what it is you are eating, whereas LFS gives you the ingredients to make a hamburger. This allows you to carefully inspect it, remove unwanted ingredients, and at the same time allow you to add ingredients to enhance the flavour of your hamburger. When you are satisfied with the ingredients, you go on to the next part of putting it together. You now have the chance to make it just the way you like it: broil it, bake it, deep-fry it, barbeque it, or eat it raw.
Another analogy that we can use is that of comparing LFS with a finished house. LFS will give you the skeleton of a house, but its up to you to install plumbing, electrical outlets, kitchen, bathtub, wallpaper, etc.
Another advantage of a custom built Linux system is added security. You will compile the entire system from source, thus allowing you to audit everything, if you wish to do so, and apply all the security patches you want or need to apply. You dont have to wait for somebody else to provide a new binary package that fixes a security hole. Besides, you have no guarantee that the new package actually fixes the problem (adequately). You never truly know whether a security hole is fixed or not unless you do it yourself.
Enhancements:
- The LFS LiveCD Team is proud to announce the release of the x86-6.2-3 version of LFS LiveCD. This version is built using LFS 6.2 and many Beyond Linux From Scratch packages from the Subversion branch. Source packages for LFS 6.2, and the LFS book itself, are included on the live CD. The CD is also suitable as a host for building x86 and x86_64 Cross LFS systems. Other features and bugfixes: the CD supports hibernation; the CD file system can be written to; the CD contains a visually pleasing and easy-to-use window manager, XFce...