How to get directory sizes without junctions in Far Manager

Oh joy. While writing the question (and coming to the directory history part) I stumbled upon the solution myself. Far provides a folder history as well (Alt+F12), so doing a quick Alt+F12, ↵ goes back to the previous folder.

I have now bound this to Ctrl+⇧+\.

With PowerShellFar in Far Manager you can invoke PowerShell commands right from the command line with the prefix ps:. That is:

Commands with console output, prefix ps:

    ps: Get-Date
    ps: 3.14 / 3
    ps: [math]::pi / 3

Commands with viewer output, prefix vps:

    vps: Get-Process
    vps: Get-ChildItem C:\TEMP\LargeFolder -Recurse -Force

Commands starting UI or background jobs normally use prefix ps:

    ps: $Far.Msg("Hello world!")
    ps: Get-Process | Out-FarList -Text Name | Open-FarPanel
    ps: Start-FarJob { Remove-Item C:\TEMP\LargeFolder -Recurse -Force }

If you expect lengthy output consider to start Far Manager as Far.exe /w.

Finally see built-in PowerShellFar help, sections Command line and FAQ. You can define some accelerators. For example I use [Space] which inserts ps: into the empty command line. Thus, actually I have to type just 1 more symbol. This is a little bit inconvenient but it is perfectly compensated by the standard CMD shell at hands, CMD is not dead, especially in Far Manager.