Re: sed -i problem?

[Bob McGowan <rmcgowan at veritas dot com>]

Some additional info, perhaps helpful in the final analysis -

Supply a suffix to the -i option, the original gets renamed with the suffix 
appended, and the temp file gets renamed to the original name.

This was found by checking the file dates from a long listing, not strace-ing 
the execution.

This may also provide a work-around for Robert, requiring the removal of the 
backup file, but at least the original named file has the edited content, as 
desired.

Bob

Max Bowsher wrote:
> Robert Mecklenburg wrote:
>
> > I seem to be having problem with the -i flag in sed 4.0.1 in the
> > latest cygwin release.  The docs state -i places output in a tmp file
> > and renames the tmp to the original when finished.  It appears the
> > rename is not happening for me:
> [snip example]
>
> I did a quick bit of strace-ing, and it seems that sed isn't closing the
> input and output files before doing the rename. Unsurprisingly, this fails
> with "Access is denied.".
>
> But sed is trying to close the files. It gets as far as
> lib/utils.c:ck_fclose(stream), but then it does something complicated with a
> linked list, and ends up never calling do_ck_fclose(), which would actually
> call fclose().
>
> Right, I've got no more time now, so hopefully someone else will take my
> analysis, and finish tracking down this bug.
>
> Max.
>
>
>
> --
> Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
> Bug reporting:         http://cygwin.com/bugs.html
> Documentation:         http://cygwin.com/docs.html
> FAQ:                   http://cygwin.com/faq/
--
Bob McGowan
Staff Development Engineer
VERITAS Software
rmcgowan@veritas.com


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Bug reporting:         http://cygwin.com/bugs.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/