PS C:\tmp> ls tst                                         # stringification of list of objects


    Verzeichnis: C:\tmp


Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a----       22.01.2021     01:23             12 tst


PS C:\tmp> (ls tst).GetAccessControl().Owner              # get Access Obj and get owner
COM\RolfLanX
PS C:\tmp> $x=ls tst                                      # save obj in var 
PS C:\tmp> $x.length                                      
6
PS C:\tmp> cat tst

PS C:\tmp> echo "blabla" >tst                             # change content
PS C:\tmp> $x.length                                      # old length
6
PS C:\tmp> (ls tst).length                                # new length
18