Ubuntu Desktop Info

 

systemctl status display-manager.service
echo $XDG_CURRENT_DESKTOP
XFCE
echo $DESKTOP_SESSION
xfce
 

Upgrade old Android to 10 in Sony Xperia

 https://dev.androidfilehost.com/?w=files&flid=295879&sort_by=name&sort_dir=ASC

 https://twrp.me/sony/sonyxperia10.html

 

https://get.pixelexperience.org/devices

 

https://twrp.me/Devices/

 

Popular adb commands

• adb shell - launches a shell on the device
• adb push <local> <remote> - pushes the file <local> to <remote>
• adb pull <remote> [<local>] - pulls the file <remote> to <local>. If <local> isn’t specified, it will pull to the current folder.
• adb logcat - allows you to view the device log in real-time. You can use adb logcat -b radio to view radio logs, and adb logcat -C to view logs in colour
• adb install <file> - installs the given .apk file to your devic

 

https://xdaforums.com/t/guide-full-phone-backup-without-unlock-or-root.1420351/

 

Ubuntu list services

 

sudo systemctl list-units

Android by VMWare on Linux

VMWare paremeters

• bios.forceSetupOnce = "TRUE"
  
• bios.bootDelay = "xxxx"

Resources

[1] Android images http://www.osboxes.org/android-x86/

References
[1] https://kb.vmware.com/s/article/1004129
[2] http://siliseed.com/2013/08/instalar-android-en-una-maquina-virtual-windows.html
[3] https://android.stackexchange.com/questions/141700/how-to-fix-android-x86-install-on-vmware
[4] https://android.stackexchange.com/questions/144535/android-x86-marshmallow-not-booting-on-virtualbox-and-vmware-workstation

Ubuntu 20 VMWare Player

 

sudo apt update

sudo apt install build-essential linux-headers-generic

Next, download and install from the following resources

VMware-Player-Full-17.5.0-22583795.x86_64.bundle

Download from drive

[1] https://drive.google.com/file/d/1X0MifVmJ_gr5UgShUKGrt8V49YA2wI6O/view?usp=drive_web

[2] Linux Lite 5.2 based on Ubuntu 20 https://osdn.net/dl/linuxlite/linux-lite-5.2-64bit.iso

References:

[1] original link https://salvatorenoschese.it/vmware-17-5-2-download-url/

[2] Linux Lite mirror https://osdn.net/projects/linuxlite/storage/

VPS 2024

 

 

References:

[1] https://github.com/cloudcommunity/Cloud-Free-Tier-Comparison

[2] Uptime Kuma https://github.com/louislam/uptime-kuma

ffmpeg: Extract mp3 from video

 

 ffmpeg -i mad-principio_peter.mp4 -vn -y out1.mp3 #9M

 

ffmpeg -i mad-principio_peter.mp4 -f mp3 -ab 192000 -vn out2.mp3 #14M

ffmpeg -i mad-principio_peter.mp4 -f mp3 -ab 128000 -vn out3.mp3 #9M
ffmpeg -i mad-principio_peter.mp4 -vn -acodec libmp3lame out4.mp3 #9M

ffmpeg -i mad-principio_peter.mp4 -acodec libmp3lame -ab 128k out5.mp3 #9M

ffmpeg -i gym.mp4 -f webm -c:v libvpx -b:v 1M -acodec libvorbis gym.webm -hide_banner

Second

ffmpeg -i sample.avi -q:a 0 -map a sample.mp3  #complete

ffmpeg -i sample.avi -ss 00:03:05 -t 00:00:45.0 -q:a 0 -map a sample.mp3 #fraction

Parameters :

-q:a 0 for variable bit rate

-ss starting timestamp

-t  the encoding time (If you don't specify, it will go to the end)

-map 0:a:3 selects audio stream #4 (ffmpeg starts counting from 0) 

** specific the timestamps in HH:MM:SS.xxx format.

 

References:

[1] https://json2video.com/how-to/ffmpeg-course/ffmpeg-extract-audio.html

Update Chrome in Ubuntu

 

# Install

# via http://askubuntu.com/questions/510056/how-to-install-google-chrome

wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add - 

sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google-chrome.list'

sudo apt-get update 

sudo apt-get install google-chrome-stable

# Update

sudo apt-get --only-upgrade install google-chrome-stable

Video tools online

Rotate/Crop/Resize

[1] https://ezgif.com/rotate-video

[2] Fast https://www.rotatevideo.org/ 

Cuda on Linux18 (y2021)

After installation don't forget it(.bashrc):

#Cuda 8.0 Settings
export CUDA_HOME=/usr/local/cuda-8.0
export LD_LIBRARY_PATH=${CUDA_HOME}/lib64  
PATH=${CUDA_HOME}/bin:${PATH}
#export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:

 

Drivers

[1] Legacy https://www.nvidia.com/en-us/drivers/unix/

To Review (Cuda and Driver)

CUDA 11.2             >= 450.80.02
CUDA 11.1 (11.1.0)     >= 450.80.02
CUDA 11.0 (11.0.3)     >= 450.36.06
CUDA 10.2 (10.2.89)     >= 440.33
CUDA 10.1 (10.1.105)     >= 418.39
CUDA 10.0 (10.0.130)     >= 410.48
CUDA 9.2 (9.2.88)     >= 396.26
CUDA 9.1 (9.1.85)     >= 390.46
CUDA 9.0 (9.0.76)     >= 384.81
CUDA 8.0 (8.0.61 GA2)     >= 375.26
CUDA 8.0 (8.0.44)     >= 367.48
CUDA 7.5 (7.5.16)     >= 352.31
CUDA 7.0 (7.0.28)     >= 346.46

[1] Compatibility  https://docs.nvidia.com/deploy/cuda-compatibility/index.html 

To Review (Cuda and GCC)

CUDA version     Max GCC version
11.1             10.0
11                9
10.1, 10.2    8
9.2, 10.0      7
9.0, 9.1        6
8                  5.3
7                  4.9
5.5, 6           4.8
4.2, 5           4.6
4.1               4.5
4.0               4.4

Cuda Toolkit from 6.5 to 10 and more

[1] https://developer.nvidia.com/cuda-toolkit-archive

Common problems

[1] Can't locate InstallUtils.pm in @INC

$sh ./cuda(your version).run --tar mxvf #for unpack

$cp InstallUtils.pm /usr/lib/x86_64-linux-gnu/perl-base #check path in error message

[2] Messages during Cuda installation

$sudo ./cuda_6.5.14_linux_64.run --override

$sudo ./cuda_xxx.run --override  #to ignore last compiler or related

#During Cuda 6.5

Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 340.29?

#During Cuda 8

Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 375.26?

#During Cuda 9

Install NVIDIA Accelerated Graphics Driver for Linux-x86_64 384.81?

[3] Adicional  notes

https://forums.dual.sphysics.org/discussion/1324/get-the-gpu-running

[4] How to disable nouveau driver to install NVIDIA drivers

$vi /etc/modprobe.d/blacklist-nvidia-nouveau.conf
blacklist nouveau
options nouveau modeset=0

$sudo update-initramfs -u 

$sudo reboot 

 

 

Ubuntu enable Sony Xperia USB transfer

 

sudo apt-get install libusb-dev

sudo apt-get install gmtp

References:

[1] Manual installation of libmtp http://www.humans-enabled.com/2011/12/how-to-fix-samsung-galaxy-nexus-mtp.html

[2] https://gmtp.sourceforge.io/

[3] Original post https://android.stackexchange.com/questions/36376/cant-explore-files-on-my-sony-xperia-u-using-my-ubuntu-12-10-laptop

Mount Google Drive in local file system

 

[1]  https://ostechnix.com/how-to-mount-google-drive-locally-as-virtual-file-system-in-linux/

 

 

Planos/Tarifas VPS Brasil/Perú

Provedores Brasil

[0] https://dokehost.com.br/cloud-vps-windows-e-linux-com-protecao-ddos

[1] https://minivps.com.br/linux/brasil/
[2] https://www.weblink.com.br/servidores
[3] https://www.vpsbrasil.com/vpslinux
[4] https://www.hostinger.com.br/servidor-vps (Boleto bancario)

[5] https://br.godaddy.com/hosting/vps-hosting



Proveedores Perú
[1] https://www.sitiohost.pe/vps/
[2] https://www.bluehosting.pe/vps/ (Perú) BCP/Interbank
[3] https://www.rackeo.pe/virtualizacion/
[4] https://www.boxhosting.pe/vps/


[5] https://pe.godaddy.com/hosting/vps-hosting-vps4



International
[1] https://clients.databasemart.com/cart.php
[2] https://hostry.com/products/vps/

Fedora VPN

wget https://git.io/vpn -O openvpn-install.sh

References:

[1] https://www.ostechnix.com/easiest-way-install-configure-openvpn-server-linux/ 

[2] https://kifarunix.com/install-and-setup-openvpn-server-on-fedora-29-centos-7/2/

Reopen connection after close during openvpn execing 

Linux:

Connection drop after active openvpn 

/etc/sysctl.conf
net.ipv4.ip_forward = 1   

Windows:

https://www.geeknetic.es/Noticia/10486/Trucos-Como-usar-una-VPN-accediendo-a-Internet-con-tu-conexion-local.html

https://tutorialesenlinea.es/409-conectar-por-vpn-sin-perder-la-conexion-a-internet.html

https://social.technet.microsoft.com/Forums/es-ES/044c7659-3f63-42fd-b15f-f75a4291c080/conectarse-por-vpn-a-un-equipo-remoto-y-perder-la-conexin-a-internet-con-los-demas-programas?forum=servinfoeslatames

http://elblogdejuanbo.blogspot.com/2011/10/conexion-desde-casa-una-vpn-sin-perder.html

Ubuntu 16 - VMWare Player 12 - GCC Not found

First solution
cd /usr/lib/vmware/modules/source 
wget https://github.com/mkubecek/vmware-host-modules/archive/player-12.5.9.zip 
unzip player-12.5.9.zip 
cd vmware-host-modules-player-12.5.9/vmmon-only/ 
make 
cd ../vmnet-only/ 
make 
cd .. 
mkdir /lib/modules/`uname -r`/misc 
cp vmmon.o /lib/modules/`uname -r`/misc/vmmon.ko 
cp vmnet.o /lib/modules/`uname -r`/misc/vmnet.ko 
depmod -a /etc/init.d/vmware restart


Second solution

mkdir ~/vmmodules #create a temp folder and copy files.
cp /usr/lib/vmware/modules/source/vmnet.tar /usr/lib/vmware/modules/source/vmmon.tar ~/vmmodules/ 
# make the modules manually 
tar -xvf vmmon.tar 
cd vmmon-only 
make 
cd .. 
sudo cp vmmon.o /lib/modules/`uname -r`/kernel/drivers/misc/vmmon.ko.gz 
tar -xvf vmnet.tar 
cd vmnet-only 
make 
cd .. 
sudo cp vmnet.o /lib/modules/`uname -r`/kernel/drivers/misc/vmnet.ko.gz 
#Then reload the modules and restart vmware service, vmplayer should works now. 
sudo depmod -a 
sudo systemctl restart vmware


Thrid solution

#install the right version of gcc
$sudo apt-get install g++-4.9 

Trick

$sudo sed 's/gcc version 5.4.0/gcc version 6.4.0/' /proc/version > /tmp/version
$sudo mount --bind /tmp/version /proc/version
$sudo vmware-modconfig --console --install-all
$sudo umount /proc/version && rm /tmp/version

Final solution 2019
Update kernel from 4.4 to 4.11 works good[2] and download from [3].

References:
[1] https://unix.stackexchange.com/questions/310637/vmware-kernel-module-a-compatible-version-of-gcc-was-not-found
[2] Update kernel https://www.howtoforge.com/tutorial/how-to-upgrade-linux-kernel-in-ubuntu-1604-server/
[3] Ubuntu kernels https://kernel.ubuntu.com/~kernel-ppa/mainline/
[4] Update Ubuntu 18 kernel https://www.tecmint.com/upgrade-kernel-in-ubuntu/ 

MultiSeat Architecture

References:
[1] https://support.userful.com/Manuals/Userful_Desktop/HowTo/VideoCardToUSB

[2] Def https://en.wikipedia.org/wiki/Multiseat_configuration
[3] Software https://www.geckoandfly.com/23654/virtual-desktop-software-multiple-users/
[4] Remote Desktop https://www.tecmint.com/best-remote-linux-desktop-sharing-software/

Dynamic DNS

FQDN (Fully Qualified Domain Name)

• Pc name: "deb"
• Domain name: "bar.com"

O FQDN is: "deb.bar.com."


Alternatives

[1] http://neorouter.com/products-nrfree

private VPN Services

Resources:

[1] Compare https://www.wizcase.com/best-vpns-for-brazil
[2] Perú https://www.vpnfan.com/blog/best-lima-vpns/
[3] Providers Pt https://canaltech.com.br/internet/descubra-por-que-usar-uma-vpn-e-veja-como-escolher-a-melhor/

Stream Music from your Linux PC to Android Cellphone Speaker

1) SoundWire

2) WiFiAudio Server for Linux 64bit

References:
[1] Client https://appuals.com/stream-audio-pc-android-device/
[2] Server http://georgielabs.net/
[3] http://wifiaudio.boards.net/thread/2/wifiaudio-support-links-download-application
[4] WifiAudio Sever Linux 64bits http://wifiaudio.boards.net/attachment/download/6

Linux Remote Desktop

sudo apt-get update
sudo apt-get install xrdp 

#desktop

sudo apt-get install mate-core mate-desktop-environment mate-notification-daemon

#setting session

sudo sed -i.bak '/fi/a #xrdp multiple users configuration \n mate-session \n' /etc/xrdp/startwm.sh

#firewall

sudo ufw allow 3389/tcp

#Use remmina desktop to connect

Extra

service --status-all

printf 'Desktop: %s\nSession: %s\n' "$XDG_CURRENT_DESKTOP" "$GDMSESSION"

References:
[1] Setting xrdp https://medium.com/@vivekteega/how-to-setup-an-xrdp-server-on-ubuntu-18-04-89f7e205bd4e
[2] https://websiteforstudents.com/connect-to-ubuntu-16-04-17-10-18-04-desktop-via-remote-desktop-connection-rdp-with-xrdp/
[3] Print desktop name and session
https://askubuntu.com/questions/72549/how-to-determine-which-window-manager-is-running