[PATCH v3 (resend)] tee: Add -q, --quiet, --silent option to not write to stdout

[Alex Henrie]

On Sun, Mar 14, 2021 at 3:44 AM Alejandro Colomar (man-pages)
<alx.manpages at gmail.com> wrote:
>
> On 1/25/21 5:03 AM, Bernhard Voelker wrote:
> > OTOH I understand that there's a little gap in the tool landscape.
> > Astonishingly, there doesn't seem to exist a trivial tool to redirect
> > from standard input (or any other input file descriptor) to a file.
> > I wrote such a little tool in the attached:
> >
> >    $ src/sink --help
> >    Usage: src/sink [OPTION]... FILE
> >    Copy input stream to FILE.
> >
> >    Mandatory arguments to long options are mandatory for short options too.
> >
> >      -a, --append              append to the given FILE, do not overwrite
> >      -c, --create              ensure to create FILE, error if exists
> >      -i, --input-stream=FD     read from stream FD instead of standard input
> >
> >    The default input stream number FD is 0, representing the standard input.
> >
> > This allows not only to copy data from standard input, but from any
> > file descriptor open for reading.  It also allows control over
> > how the output file will be opened (e.g. with O_CREAT|E_EXCL).
> >
> > The OPs case would look like:
> >
> >    echo 'foo' | sudo sink /etc/foo
> > or
> >    echo 'foo' | sudo sink -a /etc/foo  # append.
> > or
> >    echo 'foo' | sudo sink -c /etc/foo  # ensure creation of the file.
> >
> > I'm not sure if this will ever be considered for inclusion -
> > I just did it "for fun". ;-)
> >
> > Have a nice day,
> > Berny
> >
>
> By chance, I just found out that there is a tool very similar to 'sink'
> in moreutils [1].  It's called 'sponge'.
>
> [1]: <https://joeyh.name/code/moreutils/>
>
> So this feature already exists, and therefore I drop my patches.
>
> Cheers,
>
> Alex

Interesting, thanks for sharing. There's still no `sponge -q` option
though--it always writes either to a file or to standard output.

-Alex