npm install expo-cli --global expo init my-app cd my-app expo start
Here is what the above code is Doing:
1. Install the Expo CLI command line utility
2. Create a new project using the blank template
3. Navigate to the new project directory
4. Start the development server
pip install python-dotenv Here is what the above code is Doing: 1. Importing the os module 2. Loading the .env file 3. Creating a variable called ‘SECRET_KEY’ 4. Setting the SECRET_KEY variable to the value of the SECRET_KEY environment variable
By default there will be a backup for your sources.list file on the same directory itself. sudo cp /etc/apt/sources.list.save /etc/apt/sources.list Here is what the above code is Doing: 1. sudo – Super User DO 2. cp – Copy 3. /etc/apt/sources.list.save – Source file 4. /etc/apt/sources.list – Destination file
pip install -U Flask Here is what the above code is Doing: 1. We’re importing the Flask class from the flask module. 2. We’re creating a new instance of the Flask class. The first argument is the name of the application’s module or package. If you are using a single module (as in this example),…
$ sudo snap remove postman Here is what the above code is Doing: 1. We’re using the sudo command to run the snap command as root. 2. We’re using the remove command to remove the postman snap. 3. We’re using the postman argument to specify the postman snap.
pip install PyYAML==5.1.2 Here is what the above code is Doing: 1. We’re installing the latest version of pip. 2. We’re installing the latest version of setuptools. 3. We’re installing the latest version of wheel. 4. We’re installing the latest version of PyYAML.
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf Here is what the above code is Doing: 1. gs – run the Ghostscript interpreter. 2. -sDEVICE=pdfwrite – output to a PDF file. 3. -dCompatibilityLevel=1.4 – make the PDF 1.4 compatible. 4. -dPDFSETTINGS=/screen – reduce the PDF file size by lowing the output quality. 5. -dNOPAUSE…