PersistentObjects
PersistentObjects[] gives all persistent objects in all locations in $PersistencePath.
PersistentObjects[patt]gives all persistent objects whose names match the string pattern patt.PersistentObjects[patt, loc]gives all matching persistent objects in persistence location loc.PersistentObjects[patt, {loc1, ...}]gives all matching persistent objects in all the loci.
Examples
PersistentObjects[]PersistentObjects["my*"]Please visit the official Wolfram Language Reference for more details.