Apache Tomcat: Determine Version

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this post describes how to determine which version of an Apache tomcat server is running.
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Windows: Adobe flash player files have an outdated version

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since Windows 8/Server 2012 Microsoft delivers the Adobe Flash Player with it Operating System.
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Linux NetworkManager: Command line examples

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this post contains some NetworkManager nmcli command line examples for frequently used tasks.



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VMware: Set MAC Address of a kernel interface with PowerCli

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the New-VMHostNetworkAdapter offers the ability to set the MAC address while adding a new kernel interface. But this has a limitation. It always only a MAC within a range 00:50:56:00:00:00 – 00:50:56:3F:FF:FF.

If you try it even though you will get an error:

New-VMHostNetworkAdapter The MAC address is invalid or is not in the valid range 00:50:56:00:00:00 - 00:50:56:3F:FF:FF.

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VMware vSphere: HTML5 Webclient returns 503 Service Unavailable (Failed to connect to endpoint)

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last week I upgraded an vSphere instance from vSphere 6 to vSphere 6.7.
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