bug#9102: "timeout 0 FOO" should timeout right away

[James Youngman]

2011/7/19 Pádraig Brady <address@hidden>:
> On 19/07/11 23:00, James Youngman wrote:
>> 2011/7/17 Paul Eggert <address@hidden>:
>>> On 07/17/11 05:31, Pádraig Brady wrote:
>>>> Well my reasoning for having "0" mean don't timeout,
>>>> was to have an easy way in scripts to specify no timeout
>>>
>>> That's a good thing to have, but it could be specified in
>>> a different way.  One possibility is the '1' (digit 1) option,
>>> e.g.,  "timeout -1 FOO".  Or if that's too clever, we could
>>> use some other letter for the option.
>>
>> I'm not sure that's worked out so well for tail.   But if we are
>> looking for an argument indicating we don't want a timeout, the
>> argument "never" is quite clear.
>
> I don't follow (pardon the pun).
> This will "sleep(0)" between polls which takes 10% of my cpu here:
>
>  tail ---disable -s0 -F nosuch

Sorry about the lack of clarity.  I was referring to the mess over
"tail -n 30", "tail -30", "tail +30" etc. and more specifically was
trying to indicate that I didn't think "timeout -0" would be a useful
direction, for that reason.  I'd suggest that Paul's shell snippet
could usefully be:

timeout=never
[ "$platform" = "buggy" ] && timeout=10
timeout $timeout command

James.


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