> >> Does ksh have an API to edit a file at a specific position pos1, read
> >> n1 bytes, and write n1 bytes at that position without truncating the
> >> file? I need this to do edit a file in place without reading and
> >> writing it completely each time.
> >
> > Yes, ksh has seek redirection operators.
> >
[snip]
> >
> >
> > read -N "$n1" content 0<>"$f" <#((pos1))
> > printf "%s" "$(fun "$content")" 1<>"$f" >#((pos1))
> >
[snip]
>
> How would this example look like if I opened a file descriptor with
> the number 19? ksh seems to use file descriptors 0-9 for manual usage,
> but descriptors opened with exec {filed}<>"name.rec" use numbers > 10.
I'd have thought by prepending {filed} to the seek redirections;
{filed}<#((pos1)) and {filed}>#((pos1)) respectively.
Doesn't that work?
Janis
>
> Tina
> --
> Tina Harriott - Women in Mathematics
> Contact: tina.harriott.mathemat...@gmail.com
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