Evening, gang.
I've been playing around with this one, on & off, for a couple of weeks or so. Finally got things how I want them, so; here for the creative types among you, is Blender-portable 2.93.1 LTS.
All the usual file-manipulation tomfoolery is present & correct, and there's now some 'extras'.....namely, the ability to add a MenuEntry which launches from whatever location you're running the portable from. 3 extra items are present; a 'DATA' directory, containing a .desktop entry & a PNG icon; a 'Menu-Add' script, which copies these to the relevant locations, sym-links the 'LAUNCH' script into /usr/bin, runs 'fixmenus' & re-starts "X"; and a 'Menu-Remove' script, which deletes everything, followed by running 'fixmenus' & re-starting "X" again.
A few Puppians have been making noises about wanting to easily add MenuEntries for 'portable' apps, so I thought I'd take a crack at it & add this ability to my 'portables' for anyone who wants it.
If you want to move the portable's directory from one place to another, you'll need to remove the existing MenuEntry first. Then you can move the portable, followed by re-adding the MenuEntry from the new location. (This is because soft/hard links don't survive migration; sym-links lose their targets, and permanent links can no longer locate the inode they were pointing to - especially if you move the app between file-systems, say from one partition to another).
Apparently, this is by design....
The ability to add a .desktop file confers the added ability to put launchers in the tray's QuickLaunch area on the left, if you so desire.
You can find the portable here:-
https://mega.nz/folder/GWB1DKaI#G7S68mBYLP2f_-ZPb4koCg
I intend to gradually add this functionality to other portable apps as & when new versions get released. Hopefully, some of you will find it useful. Enjoy!
Mike. 
