A collection of Powershell file functions

A collection of PS file functions

Including:
* Deleting files and folders (incl criteria based - if older than xx days)
* Open and save file dialogs
* Hard disk usage reports

deletefilesolderthanxdays.ps1

#Shows what files would be deleted from c:\windows\temp (older than 10 days) if run. Remove 'whatif' to implement.

filter FileAge($days) { if ( ($_.LastWriteTime -le (Get-Date).AddDays($days * -1) )) { $_ } }

get-childitem c:\windows\temp -recurse | FileAge 10 | del -whatif

deletefolder.ps1

# ----------- FUNCTION ---------------------

Function Delete-Folder($folder)
# Test for and delete folder. Verify folder deletion.
{
    if (Test-Path $folder)
    {
        Remove-Item $folder -force -recurse
        if (Test-Path $folder) { return "Failed to delete folder." }
        else { return "Folder deleted." }
    }
    else { return "Folder not found." }
}

# ----------- USAGE ---------------------

$result = Delete-Folder("c:\test folder")

# Result returned by function - not necessarily required.

harddiskusage.ps1

# Initialise machine name
$server = "<>"
 
# Get fixed drive info
$disks = Get-WmiObject -ComputerName $server -Class Win32_LogicalDisk -Filter "DriveType = 3";
 
foreach($disk in $disks)
{
  $deviceID = $disk.DeviceID;
  [float]$size = $disk.Size;
	[float]$freespace = $disk.FreeSpace;
 
	$percentFree = [Math]::Round(($freespace / $size) * 100, 2);
	$sizeGB = [Math]::Round($size / 1073741824, 2);
	$freeSpaceGB = [Math]::Round($freespace / 1073741824, 2);
 
	Write-Host "$server,$deviceID,$sizeGB,$freeSpaceGB,$percentFree";
}

openreadfile.ps1

# ---------- FUNCTION -------------

Function Get-FileName
# Open file dialog box and select a file to import
{   
    [void][System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms")

    $OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
    $OpenFileDialog.filter = "Text Files (*.txt)| *.txt" # Set the file types visible to dialog

    # Alternate filters include:
    # "CSV files (*.csv) | *.csv"

    $OpenFileDialog.initialDirectory = "c:\"
    
    $OpenFileDialog.ShowDialog() | Out-Null
    $OpenFileDialog.filename
}

# --------- USAGE ---------------

$filename = Get-FileName
$filecontents = Get-Content $filename

foreach ($line in $filecontents)
....

savetofile.ps1

# ------ FUNCTION --------------

Function Set-Filename
# Set file name for saving export
{
    [void][System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms")
    $SaveFileDialog = New-Object System.Windows.Forms.SaveFileDialog
    $SaveFileDialog.Filter = "Text files (*.txt)|*.txt"
   
    $SaveFileDialog.initialDirectory = "c:\"
    
    if ($SaveFileDialog.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK)
    { $SaveFileDialog.FileName }
}

# ------ USAGE -------

$filename = Set-FileName

"some output text" | out-file $filename - append