Re: Option wanted for gzip

[Bob Proulx]

Hello Raoul,

Please keep the mailing list address in the CC list so that others may
participate in the discussion.

Raoul Behrend wrote:
> Unfortunately, I have to do it on several hundreds of astronomical images 
> per night, both on linux and on wxp.

I don't understand why that would lead to a special problem in this
case.  Are you concerned about some feature in particular?  Please
explain so that we may help.

> I'm pretty sure that the delete/not delete mechanism at the end of 
> (de)compression could be managed in ~20 lines and that it would be more 
> portable than doing special macros to do it.

Now I am twice confused because your original request was for a way to
keep the file and also decompress it avoiding the default gzip/gunzip
behavior of deleting it and here you are asking for a way to delete
the file?  As I read things that is the default behavior that you were
asking to avoid!  If you want to delete the file then simply let
gzip/gunzip delete the file after decompressing it.  Plus I did not
suggest using any "macros".  I did not suggest using anything that was
not portable.  Therefore I am very confused.

Please explain your concerns.  If you could perhaps give an example of
what you are trying to do then I am sure that it would make things
more clear.  If using the command as suggested does not work for you
could please say some words about why?

Using the shell to redirect the output of the command is portable.  I
think that would be the most portable answer.  Because if you were to
add a special option then you would only be able to operate on systems
that had your special version available.  If you simply redirect the
output then it will work everywhere.

Bob

Raoul Behrend wrote:
> Hello,
> 
> Thank you for your fast and kind answer.
> 
> Unfortunately, I have to do it on several hundreds of astronomical images 
> per night, both on linux and on wxp.
> 
> I'm pretty sure that the delete/not delete mechanism at the end of 
> (de)compression could be managed in ~20 lines and that it would be more 
> portable than doing special macros to do it. I'll look in the gzip source 
> code how it can be implemented.
> 
> Have a plesant sunday. Cheers, Raoul
> 
> 
> 
> Bob Proulx a écrit:
> 
> >Raoul Behrend wrote:
> >
> >>I would really appreciate the presence of a -k option, like in bzip2, 
> >>which keeps the original files while making the (de)compression ? Is it 
> >>possible ?
> >
> >
> >Do any of the following do what you want?
> >
> >  gzip -dc file1 > file2
> >  gunzip -c file1 > file2
> >  gzip -d < file1.gz > file2
> >  gunzip < file1.gz > file2
> >
> >Bob
>