Does a file backup of a specific subfolder, excluding some glob patterns.

BackupFilesExcludingGlob.ps1

# Set the path to the 7-Zip executable
$zipExePath = "C:\Program Files\7-Zip\7z.exe"

# Define the parent directory from which child folders will be listed
$parentDirectory = "C:\wwwroot"

# List all child directories
$directories = Get-ChildItem -Path $parentDirectory -Directory

# Check if there are any directories found
if ($directories.Count -eq 0) {
    Write-Host "No directories found in the parent folder."
    exit
}

# Display each directory with an index for the user to select
$index = 0
$directories | ForEach-Object {
    Write-Host "[$index] $($_.Name)"
    $index++
}

# Ask user for choice index
$choiceIndex = Read-Host "Please enter the index of the folder to backup"

# Validate the input
if ($choiceIndex -notmatch '^\d+$' -or $choiceIndex -lt 0 -or $choiceIndex -ge $directories.Count) {
    Write-Host "Invalid index entered. Exiting script."
    exit
}

# Get the selected folder based on user choice
$selectedFolder = $directories[$choiceIndex].FullName

# Extract just the folder name from the selected path
$folderName = Split-Path -Path $selectedFolder -Leaf

# Get the current timestamp
$timestamp = Get-Date -Format "yyyyMMdd-HHmmss"

# Define the output file path with folder name and timestamp
$outputFilePath = "C:\Backups\SiteFiles\${folderName}_$timestamp.7z"

# List of file extensions to potentially exclude
$potentialExcludes = @(
    "*.pdf",
    "*.jpg",
    "*.svg",
    "*.log.resources",
    "*.zip",
    "*.xlsx",
    "*.log",
    "*.csv",
    "*.swf",
    "*.mp3",
    "App_Data\ExtensionPackages",
    "Search",
    "Portals/*/*.png"
    )

# Initialize the exclusion list
$excludeTypes = @()

# Ask the user about each file extension
foreach ($ext in $potentialExcludes) {
    $response = Read-Host "Do you want to exclude $ext ? (Y/N, default: Y)"
    if ($response -eq "" -or $response.ToLower() -eq "y") {
        $excludeTypes += "-xr!$ext"
    }
}

# Log and execute the command
$arguments = 'a', '-t7z', "`"$outputFilePath`"", "`"$selectedFolder\*`"", $excludeTypes
Write-Host "Executing 7-Zip with command: " -NoNewline
Write-Host $arguments -join ' '

# Run the 7zip command
& $zipExePath @arguments