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richardsiddaway

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Time for cube calculation

Posted by: | January 29, 2020 Comments Off on Time for cube calculation |

My recent post on spheres got me wondering about the time for cube calculation. Defining a variable PS> $r = 2.37 I can calculate the cube by multiplying $r by itself 3 times or by using the Power function on the Math class. Starting with the simple calculation PS> Measure-Command -Expression {$r * $r * […]

under: PowerShell

Spheres

Posted by: | January 29, 2020 Comments Off on Spheres |

Continuing my series of functions that can be used for geometric calculations its time for a quick look at spheres. Remember in all of these functions that PI is set as a constant when the module is loaded: New-Variable -Name pi -Value ([math]::PI) -Option Constant Calculating the volume of a sphere is relatively straight forward. […]

under: PowerShell

Recent releases

Posted by: | January 28, 2020 Comments Off on Recent releases |

Recent releases of interest include:   PowerShell v7 Release Candidate 2. No significant changes from RC 1 – see https://github.com/PowerShell/PowerShell/releases/tag/v7.0.0-rc.2   Windows Terminal v0.8.10261. Bug fixes – see https://github.com/microsoft/terminal/releases/tag/v0.8.10261.0   PowerShell v6.2.4. No significant changes – see https://github.com/PowerShell/PowerShell/releases/tag/v6.2.4 With GA of PowerShell v7 close not sure its worth investing too much energy in v6.2.4

under: PowerShell

Circles

Posted by: | January 28, 2020 Comments Off on Circles |

One of my all time favourite films is “The Thomas Crown Affair” – the original NOT the remake. The films theme tune – Windmillls of your Mind – with its focus on circles got me thinking about geometrical calculations in general and circles in particular. I decided I’d create a library of such calculations – […]

under: PowerShell

VScode improvement

Posted by: | December 31, 2019 Comments Off on VScode improvement |

VScode is the recommended editor for PowerShell Core as its multi-platform. Personally, I’ve preferred the Windows PowerShell ISE as its more closely aligned with the code I create and the work I do. The latest VScode improvement means I’m beginning to question that stance.   The latest version of VScode has buttons to run the […]

under: PowerShell

Clear the trusted host list

Posted by: | December 31, 2019 Comments Off on Clear the trusted host list |

The final option in administering the trusted host list is to clear the entire list. The following function will clear the trusted host list function clear-trustedhost { [CmdletBinding()] param ( [string]$computername = $env:COMPUTERNAME ) if (Test-Connection -ComputerName $computername -Quiet -Count 1) { Set-WSManInstance -ResourceURI winrm/config/client -ComputerName $computername -ValueSet @{TrustedHosts = “”} } else { Write-Warning […]

under: PowerShell

Remove a trusted host

Posted by: | December 30, 2019 Comments Off on Remove a trusted host |

Continuing our collection of routines to manage the trusted hosts this time we’ll look at how to remove a trusted host function remove-trustedhost { [CmdletBinding()] param ( [string]$trustedhost, [string]$computername = $env:COMPUTERNAME ) if (Test-Connection -ComputerName $computername -Quiet -Count 1) { $th = Get-WSManInstance -ResourceURI winrm/config/client -ComputerName $computername | Select-Object -ExpandProperty TrustedHosts if ($th) { $ths […]

under: PowerShell

Add a trusted host

Posted by: | December 29, 2019 Comments Off on Add a trusted host |

Last time I showed how to read the trusted host list – this is how you add a trusted host function add-trustedhost { [CmdletBinding()] param ( [string]$trustedhost, [string]$computername = $env:COMPUTERNAME ) if (Test-Connection -ComputerName $computername -Quiet -Count 1) { $th = Get-WSManInstance -ResourceURI winrm/config/client -ComputerName $computername | Select-Object -ExpandProperty TrustedHosts if ($th) { $newth = […]

under: PowerShell

Trusted hosts

Posted by: | December 28, 2019 Comments Off on Trusted hosts |

You can use trusted hosts in WSMAN based PowerShell remoting to authenticate computers where Kerberos isn’t available. The WSMAN configuration is available through the WSMAN PowerShell drive or you can use the WSMANInstance cmdlets – available in Windows PowerShell v5.1, PowerShell 6.2 (Seem to have come back in at PowerShell v6.1) or PowerShell v7 function […]

under: PowerShell

Keep it Simple

Posted by: | December 28, 2019 Comments Off on Keep it Simple |

One of the principles I’ve always tried to stick with when writing code – in PowerShell or any other language – is Keep it Simple.   Keeping code simple makes it easier to understand, easier to debug and easier to maintain. My definition of simple code may not be the same as yours but by […]

under: PowerShell

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