jonashackt/powershell.md

## powershell.md

      
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              powershell.md
            
          
    Start Powershell from cmd

start powershell
Resolve a DNS name:

Resolve-DnsName
Get PortMapping (e.g. if HNS error - object already exists occurs)

Get-NetNatStaticMapping
...and remove the failing PortMapping with (but LOOK, it goes through all mapping with the same NatName

- so if you only want to remove one, then just say Yes there)

Remove-NetNatStaticMapping [NatName]
Show Environment variables

Get-ChildItem Env:
Set Environment variable permanentely

[Environment]::SetEnvironmentVariable('DOCKER_HOME', 'c:\ProgramData\chocolatey\lib\docker\tools\docker', 'Machine')
Install something from the web to specific folder including usage of environment variable

iwr https://github.com/docker/compose/releases/download/1.11.2/docker-compose-Windows-x86_64.exe -OutFile $env:DOCKER_HOME\docker-compose.exe
Add content of environment variable to Windows Path

[Environment]::SetEnvironmentVariable('Path', $env:Path + ';' + $env:DOCKER_HOME, 'Machine')
Check, if Port of Windows Server 2016 is open from other Windows Server 2016

Test-NetConnection -ComputerName 192.168.0.1 -Port 7865 -InformationLevel Detailed
show Windows Licence expiration period on powershell/cmd

slmgr.vbs /dlv
Show firewall rules

Get-NetFirewallRule
Get IPv4 address from Ethernet adapter vEthernet (HNS Internal NIC) with Powershell

(Get-NetIPAddress -InterfaceAlias 'vEthernet (HNS Internal NIC)' -AddressFamily IPv4).IPAddress
Windows Updates

Install Windows Updates

choco install pswindowsupdate (to get https://gallery.technet.microsoft.com/scriptcenter/2d191bcd-3308-4edd-9de2-88dff796b0bc)
Add-WUServiceManager -ServiceID 7971f918-a847-4430-9279-4a52d1efe18d
Get-WUInstall –MicrosoftUpdate –AcceptAll –AutoReboot -IgnoreUserInput -WhatIf -Verbose
Scan for Updates

Get-WUList
Show installed Updates

Get-WUHistory