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vlc sin video (pantalla negra) solo audio

Quizá es la API entre Gnome y VLC. Tenía Gnome Wayland y VLC sólo grababa sonido pero la pantalla en negro (sin video). Cambiarse a Gnome en Xorg resuelve el problema.
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extracting multipart RAR on linux

Get a global file from multipart RAR archives:

$ cat learn-git-3-hours-video.part* > full.rar


Extract the complete structure using  unrar (freeware):

$ unrar x full.rar

This is a better way:

Only extract since last part, if it was well done zipped, this will realize the job.

[FIXED] Nautilus doesn't open anymore

Update 30-09-2019 Just type:

$ tracker reset -e
source: Ask Ubuntu at Stack Exchange



Try:

sudo apt install --fix-broken
sudo apt remove --purge gnome-documents tracker
sudo apt autoremove

Then:

sudo apt install --reinstall nautilus*
sudo apt install gnome-documents tracker

After rebooting, run Nautilus, maybe the first time you need to wait 20 seconds because it seems the system is reindexing all. I got this problem while upgradig from Debian 9.3 to Debian 10 (buster) by accident closed the laptop (!) and login to Gnome Wayland.

PD. Before to run Nautilus:  xhost +local:

instalar VLC en Oracle Linux 7

repositorios de SW:
ls -la /etc/yum.repos.d/

codecs:
sudo yum --disablerepo=\* --enablerepo=nux-dextop install libdvdcss gstreamer{,1}-plugins-ugly gstreamer-plugins-bad-nonfree gstreamer1-plugins-bad-freeworld libde265 x265

sudo yum --disablerepo=\* --enablerepo=nux-dextop install vlc
--> Resolución de dependencias finalizada
Error: Paquete: 1:vlc-2.2.5.1-2.el7.nux.x86_64 (nux-dextop)
Necesita: libprojectM.so.2()(64bit)
Error: Paquete: 1:vlc-2.2.5.1-2.el7.nux.x86_64 (nux-dextop)
Necesita: libaa.so.1()(64bit)
Error: Paquete: 1:vlc-2.2.5.1-2.el7.nux.x86_64 (nux-dextop)
Necesita: libQtCore.so.4()(64bit)
Error: Paquete: SDL_image-1.2.12-7.el7.nux.x86_64 (nux-dextop)
Necesita: libSDL-1.2.so.0()(64bit)
Error: Paquete: 1:vlc-core-2.2.5.1-2.el7.nux.x86_64 (nux-dextop)
Necesita: libebml.so.4()(64bit)
Error: Paquete: ffmpeg-libs-2.8.15-1.el7.nux.x86_64 (nux-dextop)
Necesita: libschroedinger-1.0.so.0()(64bit)
Error: Paquete: 1:vlc-core-2.2.5.1-2.el7.nux.x86_64 (nux-dextop)
Necesita: libtiger…

DBD::SQLite::db do failed: Safety level may not be changed inside a transaction at (eval 1940) line 37

0.- Instalación de PERL en Debian$ wget -L http://xrl.us/installperlnix | bashDesde la línea de comandos:$ perl --versionThis is perl 5, version 24, subversion 1 (v5.24.1) built for x86_64-linux-gnu-thread-multi(with 85 registered patches, see perl -V for more detail)Copyright 1987-2017, Larry WallPerl may be copied only under the terms of either the Artistic License or the GNU General Public License, which may be found in the Perl 5 source kit.Complete documentation for Perl, including FAQ lists, should be found on this system using "man perl" or "perldoc perl". If you have access to the Internet, point your browser at http://www.perl.org/, the Perl Home Page.1. Instalación de PadreUpdate /etc/apt/sources.list, e.g. as follows:deb http://mirror.isoc.org.il/pub/debian/ stable maindeb-src http://mirror.isoc.org.il/pub/debian/ stable mainThen update the package list$ sudo apt update$ sudo apt install cpanminus [¿¿quizá convenía instalar cpanplus??]$ sudo apt install…

timeline project minimum viable product

It's done: putting foreach loop in the correct place, and one flag variable to display one event to left and the next to right. And drawing the small blue point for each event using PDO connection to database. 
This is the output:




Sources:


Learn to design a CSS3 timeline Eduonix Learning Solutions
Reviewed: Oct 6th, 2018
La clase PDOStatement The PHP Group Consultado: Dic 28, 2018
create read update delete (CRUD) in php and mysql using Php Data Object (pdo) polodev Published on Nov 13, 2017