voip by web

[1] 12voip https://www.12voip.com

My favorite Music

Ludwig Van Beethoven
   Symphony No. 5 in C minor ("Fate") (composed 1804–08, premièred 1808)
   Sonata N° 14 'moonlight'
   Fur Elisa
   Himno de la alegria
   Turkish March  (Adapted by Chavo del 8 program, in intro)


Wolfgang Amadeus Mozart
  Turkish March
  Réquiem

Antonio Vivaldi
  Storm
  La Stravaganza  Four Season:Spring

Johan Sebastian Bach
 Toccata and Fugue Ave maria
  Passacaglia
Frédéric Chopin
  Waltz rain
  Spring waltz (Mariage d'Amour)

Antonín Dvořák
  Symphony no. 9 - 4th movement - Allegro con fuoco

C++ equivalent to getch() and getche() from conio.h

#include <iostream>
#include <termios.h> //TCSANOW, ICANON, ..
#include <unistd.h>  //STDIN_FILENO ..
#include <stdio.h>  //getchar

using namespace std;

char getch(void)
{
  struct termios oldattr, newattr;
  char ch;
  tcgetattr( STDIN_FILENO, &oldattr );
  newattr = oldattr;
  newattr.c_lflag &= ~( ICANON | ECHO );
  tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
  ch = getchar();
  tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
  return ch;
}

char getche(void) //with ECHO
{
  struct termios oldattr, newattr;
  int ch;
  tcgetattr( STDIN_FILENO, &oldattr );
  newattr = oldattr;
  newattr.c_lflag &= ~( ICANON );
  tcsetattr( STDIN_FILENO, TCSANOW, &newattr );
  ch = getchar();
  tcsetattr( STDIN_FILENO, TCSANOW, &oldattr );
  return ch;
}

int main(int argc,char *argv[])
{
  char ch1=getch();
  char ch2=getche();
  cout << "\nFirst : " << ch1
       << "\nSecond: " << ch2 << endl;
  return 0;
}
//g++ getchx.cpp -o getchx

References
[1] https://www.daniweb.com/programming/software-development/threads/410155/gcc-equivalent-for-getch

Alternatives to shazam

[1] On web https://www.midomi.com
[2] Get song name from mp3 on web  http://audiotag.info
[3] Chrome plugin https://www.aha-music.com/

Deep Learning Lectures

References:
[1] Top ten papers https://www.techleer.com/articles/517-a-list-of-top-10-deep-learning-papers-the-2018-edition/

Printable Grid and Rulers Paper

Resources:
[1] Graph Paper, ready for print over A4 http://www.grassfedjp.com/print-grid-paper/
[2] Rulers http://leversetdujour.info/ruler-to-print.html

Alternatives to Google StreeView

References:

[1] https://www.mapillary.com/
[2] https://www.topbestalternatives.com/google-street-view/

Linux Microphone doesn't working

Try to reload drivers

$sudo alsa force-reload

restart device and check if sound is workin? if it doesnt do this:

$sudo apt-get remove --purge alsa-base pulseaudio
$sudo apt-get install alsa-base pulseaudio 

References:
[1] https://askubuntu.com/questions/508221/sound-input-device-microphone-not-working

Fedora/CentOS Change ports of Apache Web Server (httpd)

1) In file /etc/httpd/conf/httpd.conf

Listen 80
Listen 8079

This till your server to listen to the port 8079

2) virtual host file  /etc/httpd/conf.d/vhost.conf

<VirtualHost *:8079>
 DocumentRoot /var/www/html/api_folder
 ServerName example.com
 ServerAlias www.example.com
 ServerAdmin root@example.com 
 ErrorLog logs/www.example.com-error_log
 CustomLog logs/www.example.com-access_log common
</VirtualHost>

This mean when you go to your www.example.com:8079 redirect to
/var/www/html/api_folder

3) Restart the service

$sudo service httpd restart
$systemctl restart httpd.service

references:
[1] https://httpd.apache.org/docs/2.4/bind.html

Call using Internet (Brasil - Perú)

https://www.poptox.com/Peru
https://www.spytox.com/whose-number-is-calling-me

Ubuntu 16 OpenCV 2.4.x disable ffmpeg and jpeg

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_FFMPEG=OFF -D WITH_JPEG=OFF ..

Ubuntu webm to mp4

ffmpeg -i video.webm -movflags faststart -profile:v high -level 4.2 video.mp4

Ubuntu 16 VMWare Player


$wget -c https://download3.vmware.com/software/player/file/VMware-Player-12.5.0-4352439.x86_64.bundle
$sudo chmod u+x VMware-Player-12.5.0-4352439.x86_64.bundle
$sudo ./VMware-Player-12.5.0-4352439.x86_64.bundle

Ubuntu how to get interval time for run Application

howmuchdelay.sh

T="$(date +%s%N)"
# Do some work here
$1 $2 $3 $4 $5 #sleep 2

# Time interval in nanoseconds
T="$(($(date +%s%N)-T))"

# Seconds
S="$((T/1000000000))"

# Milliseconds
M="$((T/1000000))"

printf "Take: %02d:%02d:%02d:%02d.%03d\n" "$((S/86400))" "$((S/3600%24))" "$((S/60%60))" "$((S%60))" "${M}"

Learn Persian On Line

Resources:
[1] https://www.persianlanguageonline.com/learn/beginner/hello/
[2] http://www.persiandee.com/view/showLesson/currentLesson/1
[3] http://mylanguages.org/multimedia/farsi_audio_colors.php

Ubuntu 16: Arcade games

$sudo apt-get install zsnes  #super nintendo
$sudo apt-get install mupen64plus  #nintendo 64

Ubuntu CPU-G

Ubuntu 16

$sudo add-apt-repository ppa:atareao/atareao
$sudo apt-get update
$sudo apt-get install cpu-g


Ubuntu 14

sudo add-apt-repository ppa:cpug-devs/ppa
sudo apt-get update
sudo apt-get install cpu-g

Ubuntu 16 Using QEmu

Basic Commands:

*create drives 

$qemu-img create name.img size|M|G

$qemu-img create win98hda.img 400M 

*resize driver

$qemu-img resize filename [+|-]size[K|M|G|T]

$qemu-img resize win98hda.img +600M

$gparted win98hda.img #for expand physically 

$qemu [-boot ] -cdrom .iso [-m size]|128M -hda disk-name.img

$qemu -boot d -cdrom win98se.iso -m 512 -hda win98hda.img

other examples:

[1] install win98 using boot iso and installer iso (two disks)

$qemu-system-i386 -hda win98s2018.img -boot d -cdrom win98boot.iso -drive file=win98se.iso,index=3,media=cdrom

$qemu-system-i386 -hda win98s2018.img -boot c -cdrom win98boot.iso -drive file=win98se.iso,index=3,media=cdrom 

$qemu-system-i386 -drive file=win98s2018.img,format=raw -m 512 #other way to run

$qemu-system-x86_64 -hda driveubuntu.img -cdrom ubuntu-x86-14.1-r1.iso -boot d -m 1024   -usbdevice mouse



Images:
[1] Windows XP https://mega.nz/#!B4ZEiRyD!tIS4NFNqcShJtTvNcheujIfSVS8H3ejlU2VLJdN9C3o
[2] 95 https://mega.nz/#!tw4m2Z6K!XsrXdAODy0HGjNVzvpSNviDQfvQP0ULVI7UGbhFdJh0

References:
[1] https://www.unixmen.com/how-to-install-and-configure-qemu-in-ubuntu/
[2] http://www.helenos.org/wiki/UsersGuide/RunningInQEMU

Raspberry PI 3 qemu

apt-get install libglib2.0-dev zlib1g-dev

$./configure --target-list=i386-softmmu  #for reduce time > 5hrs (normally)


$make

$sudo make install

https://b3n7s.github.io/update/2016/06/08/windows-xp-on-qemu.html
https://wiki.gentoo.org/wiki/QEMU/Windows_guest

Ubuntu Dark Wallpaper

http://www.misucell.com/group/best-ubuntu-backgrounds/