[Info-vax] openvms renaming file

[Steven Schweda]

> [...] I put this file into a ISO file at at to simh, [...]
> DEC-VAX-VMS-TCPIP--V0501-15-1.PCSI-ZIP

   That's a bit vague.

> And it shows up in the vms 7.3 emulation as DEC_VAXV.PCS;1

   VMS doesn't have an 8.3 file-name limit.  (Long before
V7.3, it did have a 9.3 limit, but that's no longer
relevant.)  I don't know how you got the abbreviated name.

> I typed 'R unzip -a dec_vaxv.pcs;1 and well here's the log
> file, [...]

   That's not how to use UnZip (or many other, similar
programs) on VMS.  

$ r unzip
UnZip 5.50 of 17 February 2002, by Info-ZIP.  For more details see:
unzip -v.

Usage: unzip [-Z] [-opts[modifiers]] file[.zip] [list] [-x xlist] [-d exdir]
  Default action is to extract files in list, except those in xlist, to
exdir;
  file[.zip] may be a wildcard.  "-Z" => ZipInfo mode (`unzip "-Z"' for
usage).
=> define foreign command symbol in LOGIN.COM:  $ unzip :== $dev:[dir]unzip.exe 

   Note the part after "=> define foreign command symbol in
LOGIN.COM:".  Sadly, official online documentation for
Info-ZIP programs is currently in limbo, but a Web search for
keywords like, say:
      UnZip INSTALL_VMS.txt
should find something which contains additional details.

   In the mean time, do this:

      unzip :== $ device:[directory]unzip.exe

where "device:[directory]" is where "UNZIP.EXE" is.  Then
use "unzip" as you would anywhere else (without a "run"
command).