Install HP Printer in Ubuntu 20.04

Goto https://developers.hp.com/hp-linux-imaging-and-printing/gethplip
download the hplib with for your OS.

> cd /home/drvijay/Downloads/

> sudo chmod +x hplip-3.20.6.run
> ./hplip-3.20.6.run

or

> sudo apt install hplip-gui

#if any error, then below command will fix

> sudo apt install $(echo $(apt-cache search hplip | sed 's/ - .*$//g'))


















windows key -> type -> hp tool box

Maven Manual Install to latest Version - Linux Ubuntu 16 14 18 20

cd /home/
 
wget https://downloads.apache.org/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz
 
sudo tar -xvzf apache-maven-3.3.9-bin.tar.gz

sudo tar -xvzf apache-maven-3.3.9-bin.tar.gz
sudo tar -xvzf apache-maven-3.6.3-bin.tar.gz

sudo mv apache-maven-3.6.3 /opt/
cd /opt/
cd apache-maven-3.6.3/
ls

cd ..
sudo nano /etc/profile.d/mavenenv.sh



          export M2_HOME=/opt/apache-maven-3.6.3
          export MAVEN_HOME=${M2_HOME}
          export PATH=${M2_HOME}/bin:${PATH}

sudo chmod +x /etc/profile.d/mavenenv.sh

source /etc/profile.d/mavenenv.sh
 
mvn --version

Install Yarn Linux Ubuntu

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -

echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt install yarn

apt-get update

sudo apt install yarn

yarn --version

Install Python 3.x 3.7 in Ubuntu 18 from Bundle

Steps

1.   Donwload the tar - Python-3.7.4.tar.xz
2.  cd /home/ubuntu/
3.  tar xf Python-3.7.4.tar.xz
4   chmod 775 Python-3.7.4
5   chown -R root Python-3.7.4
6   chown -R root Python-3.7.4
7   cd Python-3.7.4/
8   ./configure
9   ./configure --enable-optimizations
10  make
11  make test
12  sudo make install
13  python3 --version
14  pip3
15  which python3


Your Sample Rest Application
1  cd /opt/stock/stockautobot
2  pip3 install -r requirements.txt
3  python3 app.py


Any package/module missed. please use below command to add
1  pip3 install requests


RUN
1 wget http://127.0.0.1:5002/
2 curl http://localhost:5002/