Java (JRE/JDK) – Check version installed

The Java development kit (JDK) contains tools for Java development, and the Java Runtime Environment (JRE) contains a JVM to convert byte code .class to machine code, and execute it, in short, the JRE runs Java program. In this this article we will see different methods to check which version is installed on a Linux/Windows system. Read More …

SQL Server – SQL Attach DB: Could not open new database [New Question]

A quick question, answered on Heelpbook, about “SQL Server – SQL Attach DB: Could not open new database”, an error quite common while moving or migrating SQL Server databases between servers. Read More …

Read content of compressed file (.zip file) using PowerShell [New Question]

A quick question, answered on Heelpbook, about “Read content of compressed file (.zip file) using PowerShell”, something that could be useful in some scenarios like testing or development to extract programmatically needed files from dev kits. Read More …

How to use custom UserAgent with Invoke-WebRequest on Powershell? [New Question]

A quick question, answered on Heelpbook, about “How to user custom UserAgent with Invoke-WebRequest on Powershell?”, sometime useful while testing some code interacting with websites using Powershell code. Read More …

Rename an existing PostgreSQL Database

Renaming a PostgreSQL is one of the activities that could be necessary during a normal database lifecycle, sometimes due to testing or development related activities linked to a pre-existing database. Let’s see which PL/pgSQL statement we can use to rename a database. Read More …