Eric Blake wrote:
> src/truncate.c: printf (_("Usage: %s OPTION... FILE...\n"),
> program_name);
>
> Inconsistent formatting. Do we really want to require either -r or -s, or
> would it make sense to make OPTION optional, in which case the default is
> -s0?
I'm not sure that's a desirable default.
If one wants to truncate a file to 0, then the usual method is `> file`.
Having this as a default seems a little arbitrary/dangerous.
> Also, would it make sense to extend this such that:
>
> $ echo hi > foo
> $ truncate --size=0 < foo
>
> resizes foo to 0 bytes, by way of ftruncate on stdin? If so, maybe it makes
> sense to render this as:
>
> Usage: truncate [OPTION]... [FILE]...
Is supporting stdin a useful enhancement?
Maybe if you can get the shell to open
different files based on some condition,
though again that seems a little contrived.
cheers,
Pádraig.
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