Jorge Saldívar

Tag: How to

  • Difference between String Concatenation and String Interpolation in Python

    # String Concatenation
name = "John"
age = 25
print("Hello, my name is " + name + " and I am " + str(age) + " years old.")

# String Interpolation
name = "John"
age = 25
print(f"Hello, my name is {name} and I am {age} years old.")

# String Interpolation with format()
name = "John"
age = 25
print("Hello, my name is {} and I am {} years old.".format(name, age))

# String Interpolation with format() and positional arguments
name = "John"
age = 25
print("Hello, my name is {0} and I am {1} years old.".format(name, age))

# String Interpolation with format() and keyword arguments
name = "John"
age = 25
print("Hello, my name is {name} and I am {age} years old.".format(name=name, age=age))

# String Interpolation with format() and mixed arguments
name = "John"
age = 25
print("Hello, my name is {0} and I am {age} years old.".format(name, age=age))
    Difference between String Concatenation and String Interpolation in Python

  • Reblog: Site Editor Tools

    The Site Editor gives you a powerful way to visually create every part of your site and tell your story.

    Leap into 2024 with these Site Editor Tools
    Reblog: Site Editor Tools

  • How-to Backup a WordPress Website Using WP-CLI

    Backing up a WordPress website using WP-CLI (WordPress Command Line Interface) involves several steps. Here’s a general guide on how to do it:

    1. Install WP-CLI

    If you haven’t already installed WP-CLI, you’ll need to do so. You can find the installation instructions on the WP-CLI’s official website.

    2. Access Your Server

    You’ll need SSH access to your server. Once you’ve logged in, navigate to the root directory of your WordPress installation.

    3. Backup the Database

    To backup your WordPress database, use the following WP-CLI command:

    wp db export

    This command will create a .sql file in your WordPress directory. This file contains all of your WordPress database information.

    4. Backup WordPress Files

    You also need to backup your WordPress files, including themes, plugins, and uploads. To do this, you can use a command like rsync or tar. For example:

    tar -czvf yoursite_backup.tar.gz /path/to/your/wordpress/directory

    This command will create a compressed archive of your WordPress directory.

    5. Download the Backup

    After creating the backup files on your server, you’ll need to download them to a safe location. You can use an FTP client or a command like scp for this purpose.

    6. Automating the Process

    Optionally, you can write a script to automate the backup process and schedule it to run regularly using a cron job.

    Important Tips

    • Test Your Backup: Always test your backups to ensure they work as expected.
    • Secure Your Backup: Keep your backup files in a secure location to prevent unauthorized access.
    • Regular Backups: Schedule regular backups to minimize the risk of data loss.

    Remember, while WP-CLI is a powerful tool, you should be comfortable with command-line interfaces and have the necessary permissions on your hosting server to perform these actions.

    How-to Backup a WordPress Website Using WP-CLI

  • Introducing new GitHub Copilot features in VS Code!

    Introducing new GitHub Copilot features in VS Code!

  • PDF to HTML

    WSL, Ubuntu 20.05, command line, for “PDF to HTML.” Step by step.

    Here are the short instructions to convert a PDF to HTML using WSL with Ubuntu 20.04:

    1. Install WSL with Ubuntu 20.04.
    2. Launch the Ubuntu terminal.
    3. Update Ubuntu: sudo apt update && sudo apt upgrade -y.
    4. Install Poppler: sudo apt install -y poppler-utils.
    5. Convert PDF to HTML using:
      pdftohtml -s <input_file>.pdf <output_file>.html
    6. Access the converted HTML file in the same directory.

    That’s it!

    PDF to HTML

  • Git Common Command Lines

    Git Common Command Lines

  • MacOS XAMPP, setup example.com website

    To set up a website with XAMPP on macOS and create a virtual host for it, you can follow these steps:

    1. Open the Terminal application on your Mac.
    2. Navigate to the XAMPP directory by typing the following command:
      cd /Applications/XAMPP
    3. Once you are in the XAMPP directory, navigate to the Apache configuration folder by typing the following command:
      cd etc/apache2
    4. In the Apache configuration folder, you will find a file called httpd.conf. Open this file in a text editor such as nano or vim by typing the following command:
      sudo nano httpd.conf
    5. In the httpd.conf file, locate the following line:
      # Virtual hosts
      # Include etc/extra/httpd-vhosts.conf
    6. Remove the # at the beginning of the second line to uncomment it.
    7. Save and close the httpd.conf file.
    8. Navigate to the Apache extra configuration folder by typing the following command:
      cd extra
    9. In the extra folder, you will find a file called httpd-vhosts.conf. Open this file in a text editor by typing the following command:
      sudo nano httpd-vhosts.conf
    10. At the bottom of the file, add the following code to create a virtual host for your WordPress website: 
      <VirtualHost *:80>
    DocumentRoot "/Applications/XAMPP/htdocs/example.com"
    ServerName example.com
    ServerAlias www.example.com
    ErrorLog "/Applications/XAMPP/logs/example.com-error_log"
    CustomLog "/Applications/XAMPP/logs/example.com-access_log" common
    <Directory "/Applications/XAMPP/htdocs/example.com">
        AllowOverride All
    </Directory>
</VirtualHost>
    11. Replace “example.com” with your website’s domain name.
    12. Save and close the httpd-vhosts.conf file.
    13. Restart Apache by typing the following command:
      sudo /Applications/XAMPP/xamppfiles/bin/apachectl restart
    14. Download and install WordPress into the newly created directory (example.com in this example) by following the instructions on the WordPress website.
    15. Open your web browser and type in your website’s domain name (e.g. http://example.com) to access your WordPress website.
    MacOS XAMPP, setup example.com website