A Windows product key is a 25-character code that looks like XXXXX-XXXXX-XXXXX-XXXXX-XXXXX and is used to activate Windows.
This short note shows how to find the Windows product key from a command prompt (CMD) or from a Windows PowerShell and check its validity. (more…)
The Active Directory Users and Computers is a management console used to administer Active Directory (manage users, groups, computers, polices, etc.).
By default, it is deployed on a Windows Server host, when it’s promoted to the domain controller during the Active Directory Domain Services role installation.
In this short note i am showing how to start the Active Directory Users and Computers console from the “Run” dialog, from a command-line prompt (CMD) or from a Windows PowerShell. (more…)
If you have a batch file that runs on a system startup and has to connect to some server, you may want to make it wait until the network becomes ready before actually making attempt to connect.
In this note i will show a code snippet that can be used in a batch file to wait for the network connection before executing a task. (more…)
If you need to convert some text to lower or UPPER case, this can be easily done from the command-line using the Windows PowerShell.
In this short note i will show the examples of how to convert a string in PowerShell to lowercase or UPPERCASE using the ToLower() or ToUpper() methods respectively. (more…)
Do you wonder how to find out what version of Windows is running?
The Windows version can be checked in multiple ways.
In this short note i am showing the easiest way to get information about the Windows version using the winver command from the “Run” dialog or using the systeminfo command from a command-line prompt (CMD) or from a PowerShell. (more…)
If you select the Ctrl + Shift combination to switch a keyboard layout in Ubuntu or Linux Mint, any other hotkeys with Ctrl + Shift + <Key> may stop working.
This is a known bug in Xorg that can be fixed by applying this patch.
This is a short note about how to fix the Ctrl + Shift + <Key> hotkeys in Ubuntu or Linux Mint by installing the Xorg patch from this PPA. (more…)
The “initramfs boot problem” on Ubuntu or Linux Mint is a situation when a computer does not boot up properly and instead of going straight to the login screen, drops you to the BusyBox shell with the initramfs command-line prompt.
This error usually occurs when the partition containing the operating system got corrupted.
Luckily this problem has a very easy and straightforward solution and in this note i will show how to fix it. (more…)
A wildcard operator is a special character that is used in Kibana search queries to represent one or more other characters.
Kibana supports two wildcard operators: ?, which matches any single character in a specific position and *, which matches zero or more characters.
In this note i will show some examples of Kibana search queries with the wildcard operators. (more…)
Kibana Query Language (KQL) supports boolean operators AND, OR and NOT (case insensitive).
They are used as conjunctions to combine or exclude keywords in Kibana search queries, resulting in more focused and productive results.
In this note i will show some examples of how to use boolean operators AND, OR and NOT in Kibana search queries. (more…)
kubectl apply command is used to manage applications by creating and updating Kubernetes resources declared in configuration files.
In addition to possibly to manage resources through individual files, there is a way to apply all the YAML files in a folder.
In this short note i will show how to use the kubectl apply command to apply all files in a directory. (more…)