7za 9.13 beta from http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/util/file/7zip/9.13/p7z913.zip
If files not in current working directory (in subdirectory or on other drive), 7za wrote like
Error: c:\arc.7z is not file.
Can't pack, unpack or list.
Also 7za don't know about parameter -scs.
2012-01-04 00:29:45 PST in The FreeDOS Project