JVM terminated. Exit code=160

Ok, I've got a new powefull T430 at my work: 8Gb memory and i5 (4 2.6Ghz cores) - very nice.

So, this was time for me to install a new Java Development environment. One of the good things you have by working for a software company is that you have access to all of its goodies. In my case, I've access to Rational and Websphere software.

In my current project we are using Rational Team Concert (RTC) 4.0 and as this version supports 64bits, I decided to give a try on the Rational Application Developer 8.5.1 64bits as well.

Yes, I'm running Linux at work - thank you very much.

All the install went well, downloaded the code I'm working on, but then suddently, when I tried to check-in a few changes, bazinga! JVM terminated. Exit code=160.

After some research (google as usual is your friend) I've found some related problems with XUL version, according to this IBM support post.

On my old setup (RAD 8.0) I had to apply that kind of fix, but instead I used this setup:

-Dorg.eclipse.swt.browser.UseWebKitGTK=true

in my eclipse.ini file.

So, I decided to try that fix here too. Done. Issue fixed.

Linux Tutorial: How to Create a Shared Area

One problem I always had with me and my wife using the same computer was that sometimes we need to share things that are family related like photos, videos and stuff.

So on Linux, what do you do?

In my case, I created a commom user e.g. media. I also changed the user to not allow it to login because I don't need that (and because I can :)).

# cat /etc/passwd

media:x:1001:100:,,,:/home/media:/bin/false

# ls -l /home

drwx--x--x  83 media     users    12288 Ago 24 11:39 media

To make it fancy, I also created a group for that user and added me and wife to it.

# cat /etc/group

media:x:1001:me,mywife

# cat /etc/passwd

media:x:1001:1001:,,,:/home/media:/bin/false

# ls -l /home

drwx--x--x  83 media     media    12288 Ago 24 11:39 media

This was enough for me and my wife to start to share files, but we had another problem. Every time me or my wife moved a file there, the other one couldn't move the file around - like to categorize the photos inside subdirectories.

Another problem, all files we moved there continue with our user group and as I created an specific group for that I wanted to have it in that group (ok, not a problem, but oh boy, I want it).

To make files created on that directory to belong to media group was the easy one:

# chmod -R g+rws /home/media

Did you notice the 's' at the end of group permissions change? That does the trick of making sure that all files moved to that directory is going to be changed to the directory group instead of the users's group.

To solve the problem of me and my wife changing files the other one created on that directory I had to cry for help from ACL.

I won't explain what ACL is or isn't, so if you want more information about it, please google it. I'll just show you how I set it up.

First thing you need to mount your filesystem with ACL option enabled, then you can set the default permissions for an specific directory.

# cat /etc/fstab

/dev/sdb1 /home ext3 defaults,acl 0 1

# setfacl -R -dm g::rw /home/media

That's all. Enjoy!

Save Some Space

Ok, sometimes you just need to save some space and you don't want to create an archive.

Or perhaps you have some kind of backup utility that for some reason doesn't do what you asked for and you need to unzip EVERY file it created in a n-level directory tree.

What to do now? Manually zip/unzip every single file? Take your last remaining hair off?

No, you use the shell find command. Period.

How? Simple. To compact every single file:

[me@mybox]$ find . -type f -print0 | xargs -0 /bin/gzip

To unpack all those files:

[me@mybox]$ find . -name "*.gz" -print0 | xargs -0 /bin/gunzip

Nice right?

Ok some explanations:

1) For both cases we use the find command (yeah) to... find and we pipe the results for xargs (ok, I won't explain what xargs does, so please: man xargs... come on I already helped you a lot here);
2) We use the option -print0 so it can understand we might have names with spaces or whatever other weird character in the file name, so it will quote the filename; and
3) On the first case (to compress) we only specify we want to compact all files of type "f" - file - so we exclude directories, symlinks and dwarfs;

That's it.

Nova postagem depois de muito tempo!!!

Fluxbox no Slackware (x86_64 current).

Para quem quiser nao ficar dependendo do gtk-chtheme, lxappearance,... basta colar isso no seu ~/.gtkrc-2.0:

# Uncomment your preffered gtk theme

#include "/usr/share/themes/Raleigh/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-4.0/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-4.2/gtk-2.0/gtkrc"
include "/usr/share/themes/Xfce-4.4/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-b5/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-basic/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-cadmium/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-curve/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-dawn/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-dusk/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-kde2/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-kolors/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-light/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-orange/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-redmondxp/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-saltlake/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-smooth/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-stellar/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce-winter/gtk-2.0/gtkrc"
#include "/usr/share/themes/Xfce/gtk-2.0/gtkrc"
#include "/usr/share/themes/bubble/gtk-2.0/gtkrc"
#include "/usr/share/themes/qt4/gtk-2.0/gtkrc"

# gtk icon theme
gtk-icon-theme-name="Tango"


Simples, no primeiro bloco voce escolhe qual sera o tema e depois escolhe o tema dos icones. No caso do Slackware so tem um pre-instalado. Se instalar outro e so trocar esse dai.

Feliz Ano Novo!

Finalmente eu consegui instalar o meu roteador Wireless.
Agora estou chique.

Compilação da Biblioteca Berkeley Db 4.5 no MinGW32.

É foi uma briga. Infelizmente não dá para utilizar apenas o pacote que a Oracle fornece porque na distribuição deles só vem a biblioteca C e se você quiser utilizar C++ vocês mesmo vai ter que compilá-la.

Bom, como eu já tinha a instalação do MinGW32, eu acabei tendo que instalar - apesar de não querer - o Msys para poder ter as ferramentas de desenvolvimento automake e autoconf.

Bom, agora vai uma dica, se você apenas seguir as intruções da documentação você não vai conseguir compilar a biblioteca porque no caso específico do MinGW32, é preciso ter mais uma biblioteca para compilação: wsock32.

Então para o processo de build funcionar, você deve fazer o seguinte:
$> cd db-4.5.20/build_unix
$> ../dist/configure --enable-cxx --enable-mingw LIBCSO_LIBS=-lwsock32 LIBXSO_LIBS=-lwsock32

Se você não adicionar essas duas variáveis no momento do configure, você pode acabar com o seguinte erro:
Creating library file: .libs/libdb-4.5.dll.a
.libs/os_errno.o(.text+0x3b): In function `_os_get_neterr':
c:/LibDB/build_unix/../dist/../os_windows/os_errno.c:57: undefined reference to `WSAGetLastError@0'
.libs/os_errno.o(.text+0x57):c:/LibDB/build_unix/../dist/../os_windows/os_errno.c:59: undefined reference to `WSASetLastError@4'
collect2: ld returned 1 exit status
make: *** [libdb-4.5.la] Error 1

Mais uma coisa que eu estava esquecendo. No Windows, ele acaba sobrescrevendo a biblioteca estática quando vai criar a biblioteca compartilhada. Se você quiser usar a biblioteca C++ estática, precisa impedir a criação da compartilhada, com o parâmetro --enable-shared=no do configure.

Boa sorte.

Finalmente consegui configurar o pppd para iniciar no boot.

O truque estava em colocar isso no arquivo /etc/network/interfaces:
pre-up /sbin/ifconfig eth0 up

Outra coisa, para evitar que a conexão ficasse caindo, eu comentei as seguintes linhas:
# The primary network interface
#allow-hotplug eth0
#iface eth0 inet dhcp

Para referência: Debian etch rodando speedy modem.