yydecode  started  life  as  a decoder for yEnc encoded binaries, which
have recently appeared on Usenet.  yydecode works almost identically to
the  infamous  uudecode  program.  Version 0.2.8 and onwards contains a
superset of uudecode's functionality, (ie. decodes  standard  uuencoded
files,  as well as Base64 [RFC2045] encoded files produced by uuencode)
and hence can be used as a drop-in replacement in all circumstances.

Given a selection of parts saved by your newsreader  across  msg-1.txt,
msg-2.txt  and  msg-3.txt,  any of the following (plus many more varia-
tions on the incantation) will correctly decode the file(s):

$ yydecode msg-1.txt msg-2.txt msg-3.txt

$ cat msg-1.txt msg-2.txt msg-3.txt | yydecode