atFileClassExt, atIsDerived - ASO class handling

atFileClassExt  returns  a short string (one or two characters long), visualizing the attributed software
       objects (aso) class.  This is a superset of the file class symbols  added  to  filenames  by  the  ls-F
       command.

       /      Directory.

       @      Symbolic Link.

       =      Socket.

       *      Executable.

       $      Derived.

       ^      Locked.

       Some  combinations  are possible. In espacially the circumflex (^) may be combined with any other symbol,
       resulting in a two letter string.

       atIsDerived checks whether the denoted aso is in a derived  object  cache  (return  value  TRUE)  or  not
       (return value FALSE).

       atFileClassExt, atIsDerived - ASO class handling

ls(1)

AtFStk-1.12                                 Fri Jun 25 16:39:35 1993                                  atclass(3)

       #include <atfs.h>
       #include <atfstk.h>

       char*atFileClassExt (Af_key *aso);

       int  atIsDerived (Af_key *aso);