Jasen Betts wrote in a message to Roy J. Tellason:

 RJT> I have two copies,  with different names,  wasting a whole 63k or
 RJT> so of disk space...    :-

 JB> often in cases like that can do zip -d or something like that to
 JB> make it behave like unzip, but my linux copy of infozip is two
 JB> different binaries.

I thought I'd remembered an option like that,  but when I went to look for
them just now I couldn't find them to try out.  What I did fine was gzip
and gunzip,  which are not at all the same thing of course,  and both
121K...

Maybe that's what I was thinking of?

Looking on the linux box I find that both of these are listed in /usr/bin
but are symlinks to the same names in /bin,  and /bin/gunzip is a symlink
to /bin/gzip...

And "zip" and "unzip" (again in /usr/bin) are indeed
separate utilities.  Maybe I was thinking of gzip/gunzip all along?

I guess it's apparent how much and how recently I've looked in those
directories on either machine.  :-)

 JB> I've got a dos program somewhere that simulates renaming the
 JB> executable. the source is about 12 lines of C

That might be of some interest.

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