cvs commit: src/usr.bin/gzip gzip.c

Robert Watson rwatson at
Mon Mar 10 18:11:10 UTC 2008

On Mon, 10 Mar 2008, John Baldwin wrote:

>>> So are we creating packages for ports that are compressed with gzip but 
>>> using bzip names?  Otherwise, gunzip should probably fail on a '.tbz' 
>>> because it isn't a gzipped file (unless gunzip auto-invokes bunzip2 or 
>>> some such feature that I'm not aware of).
>> gunzip is smarter than you think. :-)
> Hmm.  I guess I would consider it a user error to use gunzip on a bzip'd 
> file (round peg, square hole sort of deal).  However, that has more to do 
> with the functionality (which I find surprising and perhaps a bit 
> non-UNIX-ish) rather than this specific patch.

Yeah -- this change was really just about teaching gunzip that unzipping a 
.tbz or .tbz2 file is like unzipping a .tgz or .tgz2 file as was the case for 
.tgz: rename it to .tar when it's unzipped.  The functionality to unzip bz2 
files was already present, you just end up with a different file extension 
when done.  I can see arguments for and against that, but nothing to do with 
the patch I committed. :-)

Robert N M Watson
Computer Laboratory
University of Cambridge

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