How to limited copy file using Powershell?

Question

I want to check .jpg file in the 2nd folder. 2nd folder has some subfolder. if .jpg exist in the subfolder of 2nd folder, I will copy a file from 1st folder to subfolder of 2nd folder based on the base name. I can do this part refer to this answer How to copy file based on matching file name using PowerShell?

But I want to do limitation while I copy a file from 1st folder. I will NOT copy the file, if I already copy the same file from 1st folder to 2nd folder 3 times.

This is the code from the reference.

$Job_Path = "D:\Initial"
$JobError = "D:\Process"

Get-ChildItem -Path "$OpJob_Path\*\*.jpg" | ForEach-Object {
    $basename = $_.BaseName.Substring(15)
    $job = "$Job_Path\${basename}.png"
    if (Test-Path $job) {
        $timestamp = Get-Date -Format 'yyyyMMddhhmmss'
        $dst = Join-Path $_.DirectoryName "${timestamp}_${basename}.gif"
        Copy-Item $job $dst -Force
    }

Anyone can help me to solve this problem please. Thank you.

Updated

$Job_Path = "D:\Initial"
$JobError = "D:\Process"

Get-ChildItem -Path "$OpJob_Path\*\*.jpg" | ForEach-Object {
    $basename = $_.BaseName.Substring(15)
    $job = "$Job_Path\${basename}.png"
    if (Test-Path $job) {
        $timestamp = Get-Date -Format 'yyyyMMddhhmmss'
        $dst = Join-Path $_.DirectoryName "${timestamp}_${basename}.gif"
        $Get = (Get-ChildItem -Name "$OpJob_Path\*\*$basename.jpg*" | Measure-Object).Count
        $Get
        if ($Get -eq "3") {
            Write-Host "Continue Other Process"
            NEXT_PROCESS
        } else {
            Write-Host "Less than 3"
        }
        Copy-Item $job $dst -Force
    }

once you have your list of files, you can use the Group-Object cmdlet with a calculated property to group the files. the result will have a .Count property that you can use. [grin] something like this >>> $FileList | Group-Object -Property {$_.BaseName.Split('_')[-2,-1] -join '_'} <<< will give you two groups - three 0908_x & two 0907_y items. — Lee_Dailey
– Lee_Dailey, Commented Oct 16, 2019 at 8:45
that is a totally different question. [grin] use the -Directory parameter of Get-ChildItem to get a list of dirs & then iterate thru that to get a list of files in each dir. — Lee_Dailey
– Lee_Dailey, Commented Oct 16, 2019 at 8:54
Create a hashtable where you increment the copy count for each file and copy only if the count for the given file doesn't exceed your threshold. — Ansgar Wiechers
– Ansgar Wiechers, Commented Oct 16, 2019 at 10:21
arg! [frown] it looks like AnsgarWiechers has a workable idea for you. i will go back to lurking. — Lee_Dailey
– Lee_Dailey, Commented Oct 16, 2019 at 10:42
@Joe - perhaps your test should be $Get -ge 3 instead of $Get -eq "3" the 2nd is testing against a STRING and requires and exact match. — Lee_Dailey
– Lee_Dailey, Commented Oct 17, 2019 at 3:36

Ansgar Wiechers · Accepted Answer · 2019-10-17 07:45:13Z

1

$Get is not a hashtable, and it's also not keeping track of what's been copied already. You need to define the hashtable outside the loop

$copy_count = @{}
Get-ChildItem -Path "$OpJob_Path\*\*.jpg" | ForEach-Object {
    ...
}

and then update it whenever you copy a file

if ($copy_count[$_.Name] -le 3) {
    Copy-Item ...
    $copy_count[$_.Name]++
} else {
    ...
}

answered Oct 17, 2019 at 7:45

Ansgar Wiechers

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