Other – Scripts & HOWTOs

[Other] Start DevOps Tools From Command line

Some commands I regularly use to start tools from the command line when I need them to start with elevated privileges.

My Frequently Used CLI Commands / Admin Tools (QuickRef)	Description
dsa.msc / adsiedit.msc / virtmgmt.msc	Active Directory Users & Computers / ADSI Edit / Hyper-V Manager
start-process powershell -verb runas	Start PowerShell with Elevated Privileges
rundll32 sysdm.cpl,EditEnvironmentVariables	Edit Windows system environment variables
cacls “C:\Path\To\File.TXT” /E /G username@example.com:C	Quick way to add write permission to a filesystem resource
java -Djavax.net.debug=ssl:handshake -jar target/packagename-1.0.0-SNAPSHOT.jar	Start package with TLS handshake debugging enabled

Netwerk IPv4 Subnetting

2008-05-15 / Other / Tim van Kooten Niekerk

max aantal subnetten: 2^n (-2) // n = aantal masked bits *subnet* mask
max aantal hosts in subnet = 2^n -2 // n = ongemaskeerde bits

next multiple of 8 = next mult. of 8 greater or eq. to CIDR netmask not.
interesting value = (next multiple of 8) / 8

incremental value = 2^ (next multiple of 8 - CIDR netmask notation)

bijv. 192.168.10.50/27:
incremental value = 2^(32-27) = 2^5 = 32
interesting value = 32 / 8 = 4
netwerkadressen: 192.168.10.0, 192.168.10.32, 192.168.10.64, enz.
broadcastadressen: 192.168.10.31, 192.168.10.63, 192.168.10.95, enz.
netwerk 192.168.10.32
broadcast 192.168.1.63 (192.168.10.(64-1))

bijv. 10.6.127.255/14:
incremental value: 2^(16-14) = 2^2 = 4
interesting value = 16 / 8 = 2
netwerkadres: 10.4.0.0
broadcast: 10.7.255.255 ( 10.(8.0.0-1)

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