Category Archives: Operating Systems

Linux : apt-get Failed to fetch FailReason: ConnectionRefused

Experiencing the following issue trying to update your Debian distro using apt-get? # apt-get update Ign:1 http://deb.debian.org/debian stretch InRelease Hit:2 http://deb.debian.org/debian stretch Release Ign:3 http://repo.r1soft.com/apt stable InRelease Hit:4 http://repo.r1soft.com/apt stable Release Hit:5 http://security.debian.org/debian-security stretch/updates InRelease Ign:8 https://download.webmin.com/download/repository sarge InRelease Hit:9 https://download.webmin.com/download/repository sarge Release Err:11 https://packages.sury.org/php stretch InRelease FailReason: ConnectionRefused Reading package lists… Done W: Failed… Read More »

Windows : Show available memory with PowerShell

Here is the command how to show the available system memory on Windows with PowerShell command :

(systeminfo | Select-String 'Total Physical Memory:').ToString().Split(':')[1].Trim()

1	(systeminfo \| Select-String 'Total Physical Memory:').ToString().Split(':')[1].Trim()

Example :

PS C:\Users\user> (systeminfo | Select-String 'Total Physical Memory:').ToString().Split(':')[1].Trim()
32,767 MB

1 2	PS C:\Users\user> (systeminfo \| Select-String 'Total Physical Memory:').ToString().Split(':')[1].Trim() 32,767 MB

Windows : Multiple connections to a server or shared resource by the same user, are not allowed

Having this error message when you login your Windows session : An error occurred while reconnecting X: to \\server-name\x$ Microsoft Windows Network: Multiple connections to a server or shared resource by the same user, are not allowed. Disconnect all previous connections to the server or shared resource and try again. This connection has not been… Read More »

Linux : How to install same package version between old and new RHEL/CentOS system

I recently had to provision a RedHat Enterprise Linux 6 system for a customer that owned a production system that I have provisioned four years ago. The new system requirement was to match the same package version as the old system (that they left un-updated since the deployment – fortunately for them it was an… Read More »

Windows : List logged-in users and kill session using command line

In some circumstances where you cannot use (or open) the task manager panel to see the logged in users on a system and need to terminate a opened session, you might need to know your way around the CLI to achieve this task. Those simple steps will show you how. 1. Open the Command Prompt… Read More »

Windows : Feature update to Windows 10, version 1803 – Error 0x8007007e

I have encountered the following error while attempting to install the latest Windows Updates (on Windows 10). Feature update to Windows 10, version 1803 – Error 0x8007007e The update was blocking at “Status: Installing – 49%” and then failing. It appeared that since this PC have not been updated for a while, the update version 1803… Read More »

Windows : Remote Desktop crash immediately after session opening

I ran on this issue where the Remote Desktop Client crashed the second it opened the session. There was a related entry in the Event Viewer that stated the following : Faulting application name: mstsc.exe, version: 10.0.17134.112, time stamp: 0x82251f4e It turned out that the issue was caused by a mapped printer. To resolve this… Read More »

Windows : How to remove license key and unregister

You may require sometimes to remove the license from a Windows installation, whatever this is to re-assign a license to another machine, or before publishing an appliance, etc. Follow this procedure to put back your Windows installation to the original installation state, license wise. The following commands need to be performed with the Command Prompt… Read More »

Linux : There is no screen to be resumed matching …

Using “screen” on Linux to perform your important work? Way to go, SysAdmin 🙂 Then you might at some point encountered the following behavior – while attempting to resume a session using “screen -r”, the following message occurred : There is a screen on: 1610.pts-0.host (25/08/18 08:25:36 PM) (Attached) There is no screen to be… Read More »

Windows : How to display a message at the Windows logon

Similar as what you can do on linux with the Message Of The Day (MOTD), there is a way to display a message to users when they login to their session. Microsoft refer to this as a “legal notice” and can be achieved through the registry. 1. Open the Windows Registry Editor with elevated privileges… Read More »