Rob Sewell confirms that Test-DbaLastBackup in the dbatools kit works for Linux:
I have written about Test-DbaLastBackup in posts here, here and here. They have been Windows only posts.
With SQL Server vNext CTP 1.4 now available and providing SQL Agent capability on Linux, I wrote here about using Ola Hallengrens scripts on Linux SQL Servers so can Test-DbaLastBackup work with Linux?
It’s a short post but good to know.