sudo add-apt-repository ppa:ubuntu-toolchain-r/test
sudo apt update
sudo apt install gcc-13 g++-13
ll /usr/bin/gcc-13
ll /usr/bin/g++-13
update-alternatives --display gcc
ll /etc/alternatives/g*
sudo update-alternatives --remove-all gcc
sudo update-alternatives --remove-all g++
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 10 --slave /usr/bin/g++ g++ /usr/bin/g++-13
g++ --version
gcc --version
Category Archives: Ubuntu
Installing GCC13 on Ubuntu 22.04
Building RenderDoc for Android on WSL
I cloned the repository, created build directory, set environment variables and run CMake:
git clone https://github.com/baldurk/renderdoc.git
cd renderdoc/
mkdir build-android
cd build-android
export JAVA_HOME=~/dev/repos/graphicsprofiler/tools/buildtools/jdk
export ANDROID_SDK=~/dev/repos/graphicsprofiler/tools/buildtools/android
export ANDROID_NDK=~/dev/repos/graphicsprofiler/tools/buildtools/android/ndk-bundle/android-ndk-r20b
export PATH=$PATH:$JAVA_HOME/bin
cmake -DBUILD_ANDROID=On -DANDROID_ABI=armeabi-v7a ..
How I installed VNC on Ubuntu 22.04
I followed this guide, run the following command from WSL:
ssh -L 59000:localhost:5901 -C -N -l dmitriano $VNC_IP
and was able to connect with UltraVNC client:
Installed FireFox browser as described here.
(more…)Connecting to Ubuntu 22.04 with Remote Desktop
I simply installed:
sudo apt install ubuntu-desktop-minimal -y
sudo apt install xrdp -y
systemctl status xrdp
and was able to connect with Remote Desktop from Windows as root user:
Creating Windows Application Icon on Ubuntu 22.04
Install magick tool:
sudo apt update
sudo apt install imagemagick
Copy *.png files to a folder, for example:
win16x16.png
win32x32.png
win48x48.png
win64x64.png
and run the following command:
convert *.png winapp.ico
OpenVPN in a Docker container
Run a docker container:
export MY_IP=$(curl -s https://api.ipify.org)
sudo docker run -it --rm --cap-add=NET_ADMIN -p 1194:1194/udp -e HOST_ADDR=$MY_IP --name dockovpn alekslitvinenk/openvpn
or
sudo docker run -it --rm --cap-add=NET_ADMIN -p 1194:1194/udp -e HOST_ADDR=$MY_IP --name dockovpn alekslitvinenk/openvpn -v openvpn_conf:/opt/Dockovpn_data
to persist generated files in volume storage.
Type Ctrl+P then Ctrl+Q to turn interactive mode to daemon mode.
Determine its IP address:
sudo docker ps
sudo docker inspect dockovpn | grep IPAddress
Building QT6.4 on Ubuntu 22.04
I installed required packages:
sudo apt install build-essential
sudo apt install libx11-dev
sudo apt install ninja-build
sudo apt install openssl libssl-dev
sudo apt install libmd4c-dev libmd4c-html0-dev
sudo apt install pkg-config
sudo apt install mesa-utils libglu1-mesa-dev freeglut3-dev mesa-common-dev
sudo apt install libglew-dev libglfw3-dev libglm-dev
sudo apt install libao-dev libmpg123-dev
How I fixed my contact form
When I switched to PHP 7.4 I forgot to specify sendmail_path parameter in php.ini and my contact form stopped working. Today I found sendmail_path parameter in PHP 7.0:
cd /etc/php
find . -name "php.ini"
./7.0/fpm/php.ini
./7.0/cgi/php.ini
./7.0/cli/php.ini
./7.4/fpm/php.ini
./7.4/cli/php.ini
grep sendmail ./7.0/fpm/php.ini
sendmail_path = "/usr/sbin/sendmail -t -f *****@yandex.ru -i"
Converting WAV files with Sox
Source file:
soxi short-borrowed-old.wav
Input File : 'short-borrowed-old.wav' (flac)
Channels : 2
Sample Rate : 44100
Precision : 16-bit
Duration : 00:00:00.60 = 26460 samples = 45 CDDA sectors
File Size : 54.0k
Bit Rate : 720k
Sample Encoding: 16-bit FLAC
Comment : 'Comment=Processed by SoX'
Switching to PHP 7.4 on Ubuntu 16.04
Some WordPress plugins stopped working with PHP 7.0 on my Ubuntu 16.04 server and I switched to PHP 7.4 with the following commands:
sudo add-apt-repository ppa:jczaplicki/xenial-php74-temp
sudo apt-get update
sudo apt-get install php7.4 php7.4-fpm php7.4-cli php7.4-mysql php7.4-dom php7.4-mbstring -y
service php7.4-fpm status
cd /etc/php/7.4/fpm/pool.d
sudo mv www.conf www.conf.dist
sudo mv ../../../7.0/fpm/pool.d/devnote.conf .
sudo service php7.0-fpm reload
sudo service php7.4-fpm reload
