19 de Setembro de 2014, 15:03, por Software Livre BrasilFazia um bom tempo que não participava de um evento de PostgreSQL
e finalmente a pude participar novamente. Fui no PGDAY Campinas e fiquei
muito contente em ver muita coisas nova do PostgreSQL e o ecossistema em volta.
Aliás, teve ligthing talk e puder falar um pouco sobre como usar o
PostgreSQL num container Docker.
Ah, já estava esquecendo. A organização do evento estava excelente,
coffee-break também. Parabéns para o pessoal que organizou o PGDAY
Campinas! :)
12 de Setembro de 2014, 19:55, por Software Livre BrasilSometimes when I find a package that is installed on my computer (Debian), I
found status rc but I never found a explanation in official documentation.
For now, my OS has the following packages marked rc status:
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fike@klatoon:~$ dpkg -l | grep ^[rc]
rc libaacplus2:i386 2.0.2-dmo1 i386 AAC+ encoding library - runtime files
rc libavcodec55:i386 10:2.3.3-dmo3 i386 Library to encode decode multimedia streams - runtime files
rc libavresample1:i386 10:2.3.3-dmo3 i386 FFmpeg audio conversion library
rc libavutil52:i386 10:2.3.3-dmo3 i386 FFmpeg avutil library - runtime files
rc libavutil53:i386 6:10.4-1 i386 Libav utility library
rc libcrystalhd3:i386 1:0.0~git20110715.fdd2f19-11 i386 Crystal HD Video Decoder (shared library)
rc libfaac0:i386 1:1.28-dmo3 i386 AAC audio encoder - library files.
rc libfdk-aac0:i386 1:0.1.3-dmo1 i386 Fraunhofer FDK AAC codec library.
rc libfftw3-long3:amd64 3.3.4-1 amd64 Library for computing Fast Fourier Transforms - Long precision
rc libgssglue1:amd64 0.4-2 amd64 mechanism-switch gssapi library
rc libjim0.74:amd64 0.74-3 amd64 small-footprint implementation of Tcl - shared library
rc liblcms1:i386 1.19.dfsg2-1.5 i386 Little CMS color management library
rc libmkv0:amd64 0.6.5.1-dmo3 amd64 Alternitave to the official libmatroska/libebml libraries.
rc libmp4v2-2:amd64 2:2.0.0-dmo2 amd64 MP4 container library - runtime files
rc libswresample0:i386 10:2.3.3-dmo3 i386 FFmpeg audio rescaling library
rc libupower-glib2:amd64 0.99.0-3 amd64 abstraction for power management - shared library
rc libx265-25:amd64 1.2-dmo1 amd64 x264 video coding library.
rc libx265-25:i386 1.2-dmo1 i386 x264 video coding library.
rc libx265-31:i386 1.3-dmo1 i386 x264 video coding library
rc libzvbi0:i386 0.2.35-2 i386 Vertical Blanking Interval decoder (VBI) - runtime files
rc pcmciautils 018-8 amd64 PCMCIA utilities for Linux 2.6
fike@klatoon:~$
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Let us pick pcmciautils package as example. Checking if it doesn’t be installed on my OS.
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fike@klatoon:~$ dpkg -L pcmciautils
Package `pcmciautils' does not contain any files (!)
fike@klatoon:~$
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Now, opening “/var/lib/dpkg/status” file, here has the status all packages existents and search pcmciautils package status.
/var/lib/dpkg/status
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...
Package: pcmciautils
Status: deinstall ok config-files
Priority: extra
Section: admin
...
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A little strange “deinstall ok config-files” as status, right? Well, it’s more easy to understand. Checking again dpkg manual…
dpkg manual
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fike@klatoon:~$man dpkg
...
Package selection states
install
The package is selected for installation.
hold A package marked to be on hold is not handled by dpkg, unless forced to do that with option --force-hold.
deinstall
The package is selected for deinstallation (i.e. we want to remove all files, except configuration files).
...
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Gotcha! Its more easy to understand. To pcmciautils packages, the rc status is because its removed and still has the configuration file.
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fike@klatoon:~$ find /etc/ /var/ -name "*pcmcia*" -print 2> /dev/null
/etc/pcmcia
/var/lib/dpkg/info/pcmciautils.list
/var/lib/dpkg/info/pcmciautils.postrm
fike@klatoon:~$
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The finally, removing all packages with rc status.
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root@klatoon:~# aptitude purge $(dpkg -l|grep ^[rc] | awk '{ print $2}')
The following packages will be REMOVED:
libaacplus2:i386{p} libavcodec55:i386{p} libavresample1:i386{p} libavutil52:i386{p} libavutil53:i386{p} libcrystalhd3:i386{p} libfaac0:i386{p}
libfdk-aac0:i386{p} libfftw3-long3{p} libgssglue1{p} libjim0.74{p} liblcms1:i386{p} libmkv0{p} libmp4v2-2{p} libswresample0:i386{p} libupower-glib2{p}
libx265-25{p} libx265-25:i386{p} libx265-31:i386{p} libzvbi0:i386{p} pcmciautils{p}
0 packages upgraded, 0 newly installed, 21 to remove and 4 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
Do you want to continue? [Y/n/?]
(Reading database ... 214094 files and directories currently installed.)
Removing libaacplus2:i386 (2.0.2-dmo1) ...
Purging configuration files for libaacplus2:i386 (2.0.2-dmo1) ...
Removing libavcodec55:i386 (10:2.3.3-dmo3) ...
Purging configuration files for libavcodec55:i386 (10:2.3.3-dmo3) ...
Removing libavresample1:i386 (10:2.3.3-dmo3) ...
Purging configuration files for libavresample1:i386 (10:2.3.3-dmo3) ...
Removing libavutil52:i386 (10:2.3.3-dmo3) ...
Purging configuration files for libavutil52:i386 (10:2.3.3-dmo3) ...
Removing libavutil53:i386 (6:10.4-1) ...
Purging configuration files for libavutil53:i386 (6:10.4-1) ...
Removing libcrystalhd3:i386 (1:0.0~git20110715.fdd2f19-11) ...
Purging configuration files for libcrystalhd3:i386 (1:0.0~git20110715.fdd2f19-11) ...
Removing libfaac0:i386 (1:1.28-dmo3) ...
Purging configuration files for libfaac0:i386 (1:1.28-dmo3) ...
Removing libfdk-aac0:i386 (1:0.1.3-dmo1) ...
Purging configuration files for libfdk-aac0:i386 (1:0.1.3-dmo1) ...
Removing libfftw3-long3:amd64 (3.3.4-1) ...
Purging configuration files for libfftw3-long3:amd64 (3.3.4-1) ...
Removing libgssglue1:amd64 (0.4-2) ...
Purging configuration files for libgssglue1:amd64 (0.4-2) ...
Removing libjim0.74:amd64 (0.74-3) ...
Purging configuration files for libjim0.74:amd64 (0.74-3) ...
Removing liblcms1:i386 (1.19.dfsg2-1.5) ...
Purging configuration files for liblcms1:i386 (1.19.dfsg2-1.5) ...
Removing libmkv0:amd64 (0.6.5.1-dmo3) ...
Purging configuration files for libmkv0:amd64 (0.6.5.1-dmo3) ...
Removing libmp4v2-2:amd64 (2:2.0.0-dmo2) ...
Purging configuration files for libmp4v2-2:amd64 (2:2.0.0-dmo2) ...
Removing libswresample0:i386 (10:2.3.3-dmo3) ...
Purging configuration files for libswresample0:i386 (10:2.3.3-dmo3) ...
Removing libupower-glib2:amd64 (0.99.0-3) ...
Purging configuration files for libupower-glib2:amd64 (0.99.0-3) ...
Removing libx265-25:i386 (1.2-dmo1) ...
Purging configuration files for libx265-25:i386 (1.2-dmo1) ...
Removing libx265-25:amd64 (1.2-dmo1) ...
Purging configuration files for libx265-25:amd64 (1.2-dmo1) ...
Removing libx265-31:i386 (1.3-dmo1) ...
Purging configuration files for libx265-31:i386 (1.3-dmo1) ...
Removing libzvbi0:i386 (0.2.35-2) ...
Purging configuration files for libzvbi0:i386 (0.2.35-2) ...
Removing pcmciautils (018-8) ...
Purging configuration files for pcmciautils (018-8) ...
root@klatoon:~#
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P.S. I know, I could went directly the final but it’s cool understand why of the things.
3 de Setembro de 2014, 17:26, por Software Livre BrasilBanco do Brasil e OpenJDK
Para usar o internet banking do Banco do Brasil num Debian 64 bits
era um pouco mais trabalhoso do que outros sistemas operacionais. Para
usá-lo, eu tinha uma máquina virtual (Virtualbox) 32 bits
com Debian Wheezy instalado e o
OpenJDK+Icedtea.
Poderia usar a JVM da Oracle? Sim, poderia mas é mais trabalhoso manter
ela atualizada do que usar uma máquina virtual 32 bits.
Algum tempo atrás, o ricardoperera perguntou no canal de IRC do Debian
Brasil (sim, ainda uso IRC…) se alguém tinha dica de como acessar o
internet banking usando o Wheezy. Minha sugestão para ele foi usar uma vm
em 32 bits e passei o template do Veewee para instalar tudo que precisa
para acessar o internet banking.
O tiago_tm sugeriu uma abordagem melhor, usar o setarch.
setarch
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fike@klatoon:/tmp$ setarch x86_64 --uname-2.6 iceweasel
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