backup-wsl

0.0.2

backup-wsl.psm1

                                $ModuleName="Backup-WSL"

$env:WSL_UTF8=1

Function Backup-WSL(){

    $logfile="$HOME\backup-wsl.log.txt"

    if ((Get-Item $logfile).length -gt 1280000){

        Remove-Item $logfile

    }

    $subDir = [string]($env:BACKUP_WSL_SUBDIR ?? "sotion")

    $wslUser=[string](wsl whoami)

    $wslDistro=[string](wsl --list -q | Select-Object -first 1)

    if ($LASTEXITCODE -ne 0){

        $message = "wsl command missing"

        Write-EventLog  -LogName Application -Source "Backup-WSL" -EventID 3001 -Message $message

        exit 

    }

    $src=[string](Join-Path "\\wsl.localhost" $wslDistro "home" $wslUser $subDir)

    $dest=[string](Join-Path ${env:OneDrive} "Documents\${subDir}")

    Write-EventLog  -LogName Application -Source "Backup-WSL" -EventID 3001 -Message "Starting Backup"

    $t0=(Get-Date)

    $roboOptions = @( '/W:1','/R:0', '/E', '/xd', 'node_modules' , '/NFL', "/LOG+:${logfile}")

    robocopy $src $dest $roboOptions

    $exitcoderobo=$LASTEXITCODE

    $t1=(Get-Date)

    $delta =($t1-$t0)

    $message="Finished Backup. Duration = $delta"

    if($exitcoderobo -ne 0){

        $message="ERROR: Finished Backup. Backup failed. Duration = $delta . Check $logfile for error"

    }

    Write-EventLog  -LogName Application -Source "Backup-WSL" -EventID 3001 -Message $message

    exit $exitcoderobo

}

Function Install-BackupWSL{

    $time = New-ScheduledTaskTrigger -Daily -At 2pm

    $user = (whoami)

    $action = New-ScheduledTaskAction -Execute "${env:ProgramFiles}\PowerShell\7\pwsh.exe"`

        -Argument "-noninteractive -nologo -noprofile`

        -C `"Import-Module $HOME\scripts\backup-wsl && Backup-WSL`""

    Register-ScheduledTask -TaskName "Backup-WSL" -Trigger $Time -User $User -Action $action

}

Function Get-BackupWSLEvent {

     <#

        .SYNOPSIS

            Lists latest BackupWSL events from Windows Event Log

        .DESCRIPTION

            Lists latest BackupWSL events from Windows Event Log

        .EXAMPLE

            Get-BackupWSLEvent

        .OUTPUTS

            System.Diagnostics.EventLogEntry

    #>

    Get-EventLog -LogName Application -Source $ModuleName

}

Function Build-BackupWSLSignature {

    $cert = Get-ChildItem Cert:\CurrentUser\My -CodeSigningCert |

        Select-Object -First 1

    "backup-wsl.psd1","backup-wsl.psm1" | Foreach-Object {

        Set-AuthenticodeSignature -File $_ -Certificate $cert

    }

}

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