Powershell – How to add to a registry key

powershellwindows-registry

I need to create a script to run on a server that I do not have access to.

I need the script to append a string to an existing string value (Type = REG_SZ). The script cannot just replace the entire string with a new value as I don't know what is currently in the entry and I can't lose what is already there.

I was thinking along the lines of regini.exe, but i couldn't figure out how to export, append, import with regini.exe and a batch file. Maybe powershell could do the trick.

Best Answer

Powershell is a solid bet here.

$AppendValue="\Homes"
$RegRoot=Get-ItemProperty "hklm:\software\microsoft\windows\currentversion"
$RegValue=$RegRoot.CommonFilesDir+$AppendValue
Set-ItemProperty -path HKLM:\software\microsoft\windows\Currentversion -Name CommonFilesDir -Value $RegValue

Windows gets twitchy about anything that touches reg or registry.exe, where scripts like the above can run with less complaining.

Related Solutions

Powershell script to append an extension to a file, input from CSV

Try this

$list=import-csv("myfile.csv")
foreach ($entry in $list) {
    $withExt=$entry.FullName+".txt"
    write-host $withExt
}

The tricky part is that import-csv returns an array of arrays essentially. This is why our first version is formatted the way it is, as what write-host is getting is a list of lists. You have to iterate over each line and treat each line individually. Or at least that's one way to do it.

Massimo has the one-liner on this one.

Powershell – Export Firewall Rules using PowerShell that include Program Path

So Get-NetFirewallRule actually returns special objects. Some of the object's properties can only be accessed with associated Get-NetFirewall* commands.

For application information, pipe the object into Get-NetFirewallApplicationFilter

https://technet.microsoft.com/en-us/library/jj554860%28v=wps.630%29.aspx

PS C:\Users\Neil> get-netfirewallrule '{1A26910B-1B3B-4091-81E2-E3C7CBF02F45}' | get-netfirewallapplicationfilter


Program : C:\Program Files\MyProgram\thisProgram.exe
Package :

Best Answer

Related Solutions

Powershell script to append an extension to a file, input from CSV

Powershell – Export Firewall Rules using PowerShell that include Program Path

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