Quick Bytes IT Stuff

Getting computername in PowerShell is quite straight forward using environments variable. Example: $computerName = $env:ComputerName Write-Host "The computer name is: $computerName" With the right credentials and as long as WinRM or Windows Remote Management is enabled we can use the Environment ComputerName variable to shutdown a remote PC. This command runs or shutdown a remote pc, by invoking a local command to shutdown the PC. Invoke-Command -ComputerName remote_computer_name -ScriptBlock {Stop-Computer -ComputerName $env:ComputerName } The above invokes shutdown command locally, just like you were in front of the server or computer. Above is just a demonstration on how to use ComputerName environment variable. Shutting down a remote computer with a valid domain credentials, doesn't need the invoke-command instead command below can be used. Stop-Computer -ComputerName "RemotePC1", "Server2" -Force 1 Peter 5:6: "Humble y...

How to check default gateway and assigned IP address in Linux? There are quite a few ways to do this in a Linux system. However, in systemd or newer version of Linux systems which support the ip route command all the information is there already. The output of the ip route command shows the default gateway and the assigned or primary IP address of the VM or server. Here's an example to show the default gateway of a Linux system. The IP Address after the word "default via" is the default gateway of the system. Command is: ip r | grep default To show only the default gateway IP Address, we need to use RegEx and match the IPV4 address only. Here's the command: ip r | grep default | grep -Eoh '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' Sample output image: To show the assigned primary IP address on the VM or server, type the command below. Here's the command: ip r | grep -oP 'src \K\d+\.\d+\.\d+\.\d+' Sample output imag...

Check or read the contents of the email on Terminal for troubleshooting purposes. The Postfix command below will show the entire original message with headers and body, or the email itself in raw format. Like reading email as a text file. Get or grab the postfix ID, by typing: mailq or postqueue -p Once the ID is known use the postcat command to view the contents of the ID. postcat -bh -q F0ABD910CDE33 | less ## this command will show the contents of the email that is on the queue To delete an email use the command below: postqueue -d ID ## delete the queue ID / delete the email with the specific ID, the email will be deleted on the queue used sparingly Proverbs 3:7 Do not consider yourself wise, fear God, and turn away from evil.