PDF (Portable Document Format) is one of the most used document format for exchanging information due to its great flexibility and portability, here anothers feautures we can mention:
3 Tools for PDF manipulation Read More »
To join images from the command line we can use the convert command, convert is included in Image Magick, a suite for bitmap images manipulation
How to join images from the command line Read More »
GCompris is an educational suite that offers more than 100 activities for children from 2 to 10 years old. Some activities are game-oriented, but still educational
GCompris an educational suite for the youngest in the family Read More »
GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks.
GIMP is released under GPLv3+ licenses and is available for Linux, macOS, and Microsoft Windows.
In this guide I show you how to create a heart with GIMP, following simple steps.
How to create a symmetrical heart with GIMP Read More »
GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks.
How to create borders in GIMP Read More »
DeaDBeeF is a lightweight, stable, flexible and cross-platform music player: GNU/Linux, *BSD, OpenSolaris, Mac OS X. DeaDBeeF is able to play files in different formats: mp3, ogg vorbis, flac, … It has a clear, simple and elagant interface based on GTK2, GTK3. It has not GNOME or KDE dependencies then it’s good option for lightweight desktops like LXDE, LXQT, Lumina, XFCE.
DeaDBeeF – the last music player Read More »
If we want to have a dictionary on our computer we install the following packages:
– dictd: dictionary server
– dict: client for request the dictionary server
Debian/Ubuntu
$ sudo apt-get install dictd dict
CentOS/RHEL/Fedora
yum install dictd dict
Install dictionary in GNU/Linux Read More »
The obfuscated XML files are difficult to read because the content of the file occupies a single line. Today LibreByte offers 3 tools that allow you to format an XML file.
Tool 1: web browser, examples: Mozilla firefox, Google Chrome. The disadvantage of using a browser is that you can not edit the XML file, only useful if you if you want to view it and nothing more.
Tool 2: use xml_pp, xml_pp is part of the XML-Twig suite, to install it on Debian GNU/Linux type:
$ sudo apt-get install xml-twig-tools
You can then format the XML file by typing:
$ xml_pp -i mifichero.xml
If you want to save the formatted content in another file, type:
$ xml_pp mifichero.xml > mifichero_pp.xml
If you want to edit the formatted file, you can use any text editor.
Tool 3: Use Geany editor and prettyprinter plugin, to install it on Debian GNU/Linux type:
$ sudo apt-get install geany geany-plugin-prettyprinter
After running the above command, you must perform the following steps to activate the plugin
1. Run Geany
XFCE:
Menu-> Development-> Geany
From the console, you can also type:
$ geany &
2. Find the Menu
Tools -> Plugin Manager
3. Activate the plugin XML PrettyPrinter
Once the plugin is activated, the option to format XML appears in the Menu:
Tools-> PrettyPtrinter XML
– man xml_pp
– Geany Project
– XML-Twig
– Geany un IDE ligero
How to pretty print XML on GNU/Linux Read More »
Some DVD player do not support video in high definition resolution then it is necessary to convert it to a supported format, so
* Look for your DVD player specifications
* Look at the details of the video file that you want to convert using MediaInfo
* Use a video conversion tool, in this case we will use avconv which is part of the Libav suite
The following example assumes that your DVD supports:
* Video mpeg4 simple profile format,
* mp3 audio format
* 720 frame size (width) by 576 (high).
$ sudo apt-get install libav-tools libmp3lame0
$ avconv -i fichero-origen -f avi -vtag divx -c:v mpeg4 -c:a libmp3lame -s:v 720x576 -aspect 16x9 -qscale 3 fichero-destino
where:
-f, the destination file format, usually avconv guess the format from the extension of the destination file
-vtag, specifies that we will use fourcc divx video codec to mpeg4 (Simple Profile)
-c:v, video code that will be used during the conversion
-c:a, code of audio that we will use during the conversion
-s:v, the frame size
-aspect, aspect and ratio that will have the resulting file. Is recommended to be the same as the original file to achieve good picture quality
-qscale, value between 1-31. A value of 1 means that the resulting file will have the same quality as the original file
– man avconv
Convert video file to watch on a DVD player Read More »
MediaInfo is an utility that allows you to:
The following is the information dumped by MediaInfo:
MediaInfo supports following formats:
MediaInfo can be used through its graphical interface, command line interface or integrated into an application using the API.
$ sudo apt-get install mediainfo
$ mediainfo buffers_listed_and_hidden.ogv
General ID : 280403682 (0x10B69EE2) Complete name : buffers_listed_and_hidden.ogv Format : OGG File size : 4.61 MiB Duration : 3mn 28s Overall bit rate mode : Variable Overall bit rate : 186 Kbps Writing application : ffmpeg2theora-0.25 SOURCE_OSHASH : 3fd514e6b64347ca Video ID : 889190165 (0x34FFF715) Format : Theora Duration : 3mn 28s Bit rate : 89.5 Kbps Nominal bit rate : 297 Kbps Width : 640 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate : 30.000 fps Compression mode : Lossy Bits/(Pixel*Frame) : 0.010 Stream size : 2.22 MiB (48%) Writing library : Xiph.Org libtheora 1.1 20090822 (Thusnelda) Audio ID : 1236641633 (0x49B5A761) Format : Vorbis Format settings, Floor : 1 Duration : 3mn 28s Bit rate mode : Variable Bit rate : 80.0 Kbps Channel(s) : 2 channels Sampling rate : 44.1 KHz Compression mode : Lossy Stream size : 1.99 MiB (43%) Writing library : libVorbis 20090709 (UTC 2009-07-09)
– man mediainfo
– MediaInfo project
MediaInfo – detailed information of an audio or video file Read More »
