Linux Learnings

 Finding this file can be a bit of a scavenger hunt because the folder names are often long strings of random characters. The easiest way to find it is to use PowerShell to tell you exactly where it's hiding. Method 1: The "Automatic" Way (PowerShell) Copy and paste this command into a PowerShell window. It will spit out the exact path to your virtual disk: In powershell, run the command  Get-ChildItem -Path "$env:LOCALAPPDATA\Packages" -Filter "ext4.vhdx" -Recurse -ErrorAction SilentlyContinue | Select-Object FullName, @{Name="SizeGB";Expression={$_.Length / 1GB}}

 If you want to navigate through your folders and delete things on the fly, ncdu is the gold standard for WSL users. It feels like a simplified, terminal version of WizTree. Install it:  sudo apt update && sudo apt install ncdu Run it on your suspect folder: ncdu /path/to/your/folder If we wants to check in root of the repo, run below command ncdu ~ You can see the space of each folder like this.

Use OpenSSL to create a self-signed certificate: Step 1: Install OpenSSL (if not already installed)  # On Ubuntu/WSL sudo apt-get update sudo apt-get install openssl Step 2: Generate the certificate # Create certs directory mkdir -p certs cd certs # Generate a private key and certificate openssl req -x509 -newkey rsa:2048 -keyout signature-key.pem -out signature-cert.pem -days 365 -nodes # Convert to PKCS#12 format (.p12) openssl pkcs12 -export -out signature-cert.p12 -inkey signature-key.pem -in signature-cert.pem -name "Invoice Signing Certificate" When prompted: Enter a password for the .p12 file (To use in env variable) Fill in certificate details (or press Enter to skip) This will generate the certs file for you. Thank you.

In this post, we will see how to connect to postgres database in local activepieces development environment.  Add the Below mentioned env variables  Follow below link to install and setup postgres  https://simplelinuxlearnings.blogspot.com/2025/10/in-wsl-how-to-create-database-update.html Create a new database named activepieces like below. Now, start the application using npm start, your postgres  database should be utilized by activepieces.

  Make sure, we have postgres installed, run below query to verify that. Run the below command to install  pg_ctlcluster utility command : sudo apt install postgresql postgresql-contrib Run the below command to start the postgresql manually Run the below command to postgres user sudo -i -u postgres psql Run command createdb my_database to create a new database Run the command psql -l to list the list of database  From your current prompt ( postgres@...$ ), enter the PostgreSQL shell: psql Now, paste this command to change the password for postgres user  ALTER USER postgres WITH PASSWORD 'your_secure_password'; Now we can see like below Type \q to exits the PostgreSQL shell and brings you back to the Linux terminal  I installed the below extension in visual studio Select postgresSQL and provide the database details with password and click on Connect button. Now, we can see the database details inside visual studio Lets Thank you!

How to Create a High-Strength JWT_SECRET A secure secret must be long, random, and unpredictable . Simple phrases, dictionary words, or short strings are easily brute-forced or cracked using common tables. A good secret should be at least 32 bytes long (which results in a longer Base64 string) and generated using a cryptographically secure pseudo-random number generator (CSPRNG). Generating a Strong Secret Use your operating system's built-in cryptographic tools to generate the string. On Linux/macOS (Bash): The openssl rand command is a reliable way to generate a strong random string. The -base64 32 flag generates 32 cryptographically random bytes and encodes them in Base64 for safe use in environment files. Bash openssl rand -base64 32 On Windows (PowerShell): PowerShell offers a secure way to generate byte arrays using the .NET Framework's RNGCryptoServiceProvider . This ensures the randomness is suitable for cryptographic purposes. PowerShell $bytes=New-Object Byte[] ...