PowerShell: Hobocopy Backup Software

# hobocopy-backup.ps1
# Note: this is a quick snippet to demonstrate the use of this utility.
# The good: this software can backup locked/open files using VSS, and its speed is impressive.
# The bad: "incremental" copy does not regenerate files that have been deleted at the destination

# Input variables

# Autogen variables
$logFile="$logFolder\hobocopy-log-$(get-date -Format 'yyyy-MM-dd-hh-mm-ss').log"
$hobocopyFullSwitches="/statefile=$stateFile /ignorepattern='System Volume Information|\$RECYCLE.BIN' /full /skipdenied /r /y"
$hobocopyIncrementalSwitches="/statefile=$stateFile /ignorepattern='System Volume Information|\$RECYCLE.BIN' /incremental /skipdenied /r /y"

# Include prerequisites
if (!(get-command hobocopy)){
if (!(Get-Command choco.exe -ErrorAction SilentlyContinue)) {
Set-ExecutionPolicy Bypass -Scope Process -Force; iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
choco install hobocopy -y;

if (test-path $stateFile){
$hobocopyCommand="hobocopy $source $destination $hobocopyIncrementalSwitches"
$hobocopyCommand="hobocopy $source $destination $hobocopyFullSwitches"
$output=invoke-expression $hobocopyCommand;

write-host $output
Add-Content $logFile $output;

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