CVS and AIX

Introduction
AIX does not come with CVS (client and server) installed. But it is quite easy to install them and transform our AIX server also to CVS server.
IBM AIX Toolbox and rpm
It is a set of GNU Open Source tools compiled for AIX from source files. Ready to use packages are available here: IBM AIX Toolbox download information. Before downloading read carefully licensing and installation instructions. Those packages are installed as RPM packages so make sure that your AIX has rpm already installed. Just run:

-bash-3.2# rpm --version
RPM version 3.0.5
-bash-3.2#

If rpm is not installed then install it first.
Download
Download two packages: zlib and csv. Rpm files for these packages should be like: zlib-1.2.3-4.aix5.2.ppc.rpm and cvs-1.11.17-3.aix5.1.ppc.rpm
Install
As root user:

rpm -i zlib-1.2.3-4.aix5.2.ppc.rpm
rpm -i cvs-1.11.17-3.aix5.1.ppc.rpm

Verify that cvs is installed:

-bash-3.2# cvs -version
Concurrent Versions System (CVS) 1.11.17 (client/server)
Copyright (c) 1989-2004 Brian Berliner, david d `zoo' zuhn,
Jeff Polk, and other authors
CVS may be copied only under the terms of the GNU General Public License,
a copy of which can be found with the CVS distribution kit.
Specify the --help option for further information about CVS

Add user cvs
Add user cvs who will be the owner of cvs repositories.

useradd -m cvs

Check the service 
As a root user verify that the file /etc/services contains entries:

cvspserver 2401/tcp # cvspserver
cvspserver 2401/udp # cvspserver

Create repository directory 
Login as user cvs and create the first repository.

cvs -d /home/cvs/cvstest init

Create a list of authorized users. File: vi /home/cvs/cvstest/CVSROOT/passwd

john::cvs
marry::cvs
ivan::cvs

Add the repository just created to the list of attended repositories. 
As a root user add an entry to the /etc/inetd.conf

cvspserver stream tcp nowait cvs /usr/bin/cvs cvs --allow-root=/home/cvs/cvstest pserver

Restart the service

refresh -s inetd

Test if everything is running 
From another computer run the command:

cvs -d :pserver:ivan@aixhost:/home/cvs/cvstest login

If everything is ok then this command should be completed without any message.
Create the first project:

mkdir proj
vi proj/file.txt

And import this project into repository as a repository module

cvs -d :pserver:marry@aixhost:/home/cvs/cvstest import -m "Initial import" proj proj start

Then move to another catalog or use another computer and checkout the project just created.

cvs -d :pserver:john@aixj:/home/cvs/cvstest checkout proj

If the project content is recreated it means that our repository is running and ready to act as a host for our next big project.
Add next repository. 
It is very simple now. Just create next repository directory - for instance

cvs -d /home/cvs/cvsprod init

Add list of authorized users.

vi /home/cvs/cvsprod/CVSROOT/passwd

Modify a line in the /etc/inetd.conf (important: all repositories entries should be included in one line)

cvspserver stream tcp nowait cvs /usr/bin/cvs cvs --allow-root=/home/cvs/cvstest --allow-root=/home/cvs/cvsprod pserver

Restart

refresh -s inetd

And next repository is ready to use.

New version of JSPWiki

I uploaded a new version of JSPWiki. It has attachment feature enabled, one can download and upload attachments to the pages. An example of page having attachment added - look here.
To keep attachments a Blob data type is used. Source code to entity is here, it is simple key (page name) -> Blob content schema. So it shares 1MB limitation of blob size.
It is possible to overcome this limitation by using Google App Engine Blobstore service , no problem to replace WikiPageBlob entity with Blobstore Api. It is also possible to combine this two options together, attachments less then 1MB keep in entity, for greater attachment use Blobstore service.