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How to Add User to Sudoers
usermod -aG sudo username
Change Terminal Shell to the Bash Shell
Change Terminal Shell to the Bash Shell This is to change the current user (with sudo privileges...
Linux Users Commands
useradd Command The general syntax for the useradd command is as follows: useradd [OPTIONS] USE...
Creating an SSH Key Pair for User Authentication
ssh-keygen generates, manages and converts authentication keys for ssh. ssh-keygen can create RSA...
Copy SSH RSA key to a server
Once an SSH key has been created, the ssh-copy-id command can be used to install it as an authori...
The following packages have been kept back: Why and how do I solve it?
Why and how do I solve it? Example of what it might look like; apt-get update && apt-get upgrad...
Why use apt-get upgrade instead of apt-get dist-upgrade?
If apt-get update && apt-get upgrade often get a message that one or more upgrades are held back....
Stop VirtualBox Service Linux
Service must be stopped to apply Oracle Virtual Box Updates. systemctl stop vboxautostart-servic...
Start VirtualBox VM in Headless Mode
Note: The command VBoxManage is used to manage VirtualBox for the current user. Please ensure tha...
Useful VirtualBox Commands
If you run VirtualBox, here are some useful commands to manage your VMs. Check state of VM VBox...
Guacamole and SSH Ubuntu 22.04 connection
The following workaround to ssh into ubuntu 22.04 and above server with Guacamole comes from this...
Rerun fstab to remount volumes
Execute the below command to reload the mounts contained within etc/fstabMay need to sudo the com...
Local User Accounts
User Commands net user /add [*username] [password] net user /delete [username] {/domain} Note...
Change Windows Computer Name
Change Computer Name using PowerShell From an elevated PowerShell enter the following PowerShell...
How to Determine Which Version of Microsoft .NET Framework Installed
To check what version of .Net installed on the machine, follow steps below: From the Command Lin...
Enable Remote Desktop From Command line in Windows
This guide will teach you the steps to use Command Prompt to enable or disable Remote Desktop and...
Switch Windows Terminal Services to Install Mode
To Switch Terminal Services to Install Mode When you want to add or remove programs, or change s...
Inject Product Key to Server 2019 after install
To activate or inject a product key in Microsoft Windows Server 2019.Enter this code in an elevat...
Robocopy - Move only files under 60 days old
This line of code will move files from c:\temp to c:\temparchive that are less than 60 days old. ...
Robocopy - Move files older than 60 days to archive folder
This line of code will move files from c:\temp to c:\temparchive that are older than 60 days. It ...