Execute Powershell command from script path - powershell

Question

First I will give a brief overview of what im trying to achieve. I want to go through a series of HTML files, replace code and then re-save these HTML files. This all works however the PS command will only execute this on HTML files which are on the default Powershell path (for me this is the H drive).
I want to be able to have a seperate folder which contains my powershell script and HTML files and convert them in that folder NOT from the H drive.
The code I have is follows:
Powershell script
$HTMLfiles=get-childitem . *.html -rec
foreach ($files in $HTMLfiles)
{
(Get-Content $files.PSPath) | ForEach-Object { $_ -replace "this text", "TEST" } | Set-Content $files.PSPath
}
This successfully changes all HTML files on the H drive that contain the words 'this text' with 'TEST'. I want to be able to change these HTML files from where the Powershell script is located, NOT from the H drive?
I appreciate any help.
Thanks

Answer 1

Use the built-in variable called $PSScriptRoot to retrieve the files from the same folder where the PowerShell script resides.
Get-ChildItem -Path $PSScriptRoot -Include *.HTML;

Answer 2

In your script, you ask to the Get-ChildItem cmdlet to look for items in the current directory, to make the script look for files in another directory, you just have to specify it to Get-ChildItem :
$HTMLpath="C:\path\to\your\html\files"
$HTMLfiles=get-childitem $HTMLpath *.html -rec
foreach ($files in $HTMLfiles)
{
(Get-Content $files.PSPath) | ForEach-Object { $_ -replace "this text", "TEST" } | Set-Content $files.PSPath
}
Edit :
if you want the path to be passed as an argument to your script, just do the following :
param($HTMLpath)
$HTMLfiles=get-childitem $HTMLpath *.html -rec
foreach ($files in $HTMLfiles)
{
(Get-Content $files.PSPath) | ForEach-Object { $_ -replace "this text", "TEST" } | Set-Content $files.PSPath
}
then you can call your script in the console (assuming you are in the directory where your script is) : ./myscript "C:\path\to\your\files"

Answer 3

Calling Get-ChildItem . *.html -Rec will get all files under the current working directory. If you happen to be in the same folder as your script when you call it, I'd expect it to work as you want. If you call the script from another path, e.g. by setting up a scheduled task to run powershell.exe <path_to_script> then it may not pick up the files you want. Maybe H: is the root of your Windows user profile?
As per other answers, using $PSScriptRoot or passing the path under which the .html files reside in a parameter would be good. To combine both, you can add a parameter to your script AND set the default value for that parameter to be $PSScriptRoot:
param($HTMLpath = $PSScriptRoot)
This will (1) allow you to specify a remote path if necessary and (2) otherwise default to the path where the script is saved.