Powershell + 7zip to batch extract and rename - getting "No files to process" message

Edited:

Originally, my question was why the first piece of code wont work. the unzip action was working if I run it on it own on on single file outside the loop. but once I wrapped it round with loop, it won't work, and there was no red error either.

Thansk @nemze , his/her answer inspired me to change the my code from:

$7ZipPath = "C:\7z\7za"
$zipFolderRoot = "Z:\long folder path\Test Folder\Unzip Test"
$zipOutPath = "Z:\long folder path\Test Folder\Unzip Test\Unzip"
$zipFilePassword = "TEST123"
ls -Path $zipFolderRoot -directory -Exclude Unzip

Foreach ($zipFolderChild in (ls -Path $zipFolderRoot -directory -Exclude Unzip))
{
$zipFile = '"$zipFolderChild"+"\"+"Data.zip"'
$command = "& $7ZipPath x -o'$zipOutPath' -y -p$zipFilePassword $zipFile"
iex $command
#file rename command that I have not written yet
}

To :

$7ZipPath = "C:\7z\7za"
$zipFolderRoot = "Z:\long folder path\Test Folder\Unzip Test"
$zipOutPath = "Z:\long folder path\Test Folder\Unzip Test\Unzip"
$zipFilePassword = "TEST123"
ls -Path $zipFolderRoot -directory -Exclude Unzip

Foreach ($zipFolderChild in (ls -Path $zipFolderRoot -directory -Exclude Unzip))
{
$zipFile = "$zipFolderChild"+"\"+"Data.zip"
$command = "& $7ZipPath x -o'$zipOutPath' -y -p$zipFilePassword ""$zipFile"""
iex $command
#file rename command that I have not written yet
}

By moving the $zipFile definition outside of the ForEach loop, this works!

I think my 2nd obstacle now move to getting my files renamed inside the loop.

What I am trying to achive:

• Data.xls from 20181001 folder rename to 20181001.xls
• Data.xls from 20181008 folder rename to 20181008.xls

The amended code is still reading $zipFolderChild as the full path, how can I extract the folder name ONLY instead?

EDIT3:

Trying to get the rename statment into the loop, but not sure how to get the -NewName argument work, $zipFolderChild.Name.xls clear doesn't work. Also tried:

$folder= $zipFolderChild.Name
#file rename command that I have not written yet
$rename = "-path", "$zipOutPath\Data.xls" ,"-NewName", "$folder.xls"
& Rename-Item @rename

inside the loop, not working either.

FINALLY WORKING:

$7ZipPath = "C:\7z\7za"
$zipFolderRoot = "Z:\long folder path\Test Folder\Unzip Test"
$zipOutPath = "Z:\long folder path\Test Folder\Unzip Test\Unzip"
$zipFilePassword = "TEST123"
ls -path $zipFolderRoot -directory -Exclude Unzip

Foreach ($zipFolderChild in (ls -path $zipFolderRoot -directory -Exclude Unzip))
{
$zipFile = "$zipFolderChild\Data.zip"
$cmd = "& $7ZipPath x -o'$zipOutPath' -y -p$zipFilePassword ""$zipFile"""
iex $cmd

$folder= $zipFolderChild.Name
$xlsFile = "$zipOutPath\Data.xls"
$NewName = "$zipOutPath\$folder.xls"
&  Rename-Item -Path "$zipOutPath\Data.xls" -NewName $NewName
}

This is working for me:

$7ZipPath = "C:\7z\7za"
$zipFolderRoot = "Z:\long folder path\Test Folder\Unzip Test"
$zipOutPath = "Z:\long folder path\Test Folder\Unzip Test\Unzip"
$zipFilePassword = "TEST123"

Get-ChildItem -Path $zipFolderRoot -Exclude Unzip -Directory

Foreach ($zipFolderChild in (Get-ChildItem -Path $zipFolderRoot -Exclude Unzip))
{
    $zipFile = "$zipFolderChild\Data.zip" 
    $command = "x", "$zipFile", "-p$zipFilePassword", "-y", "-o$zipOutPath"
    & $7ZipPath @command
    #file rename command that I have not written yet
}

I used splatting for $command.

Edit: some examples for OP second question.

Try both examples and see what happens.

First:

$i = 0
Foreach ($zipFolderChild in (Get-ChildItem -Path $zipFolderRoot -Exclude Unzip))
{
    $zipFolderChild.name
    Write-Output "step"
}

Second:

$i = 0
$folder = Get-ChildItem -Path $zipFolderRoot -Exclude Unzip
Foreach ($zipFolderChild in $folder)
{      
    $folder[$i].name
    Write-Output $i
    $i++
}