stan wrote:
> On Wed, 17 Nov 2010 14:56:04 -0500
> Bill Davidsen<davidsen@xxxxxxx> wrote:
>
>> stan wrote:
>
>>> #Fix console loglevel
>>> if [ -n "$LOGLEVEL" ]; then
>>> /bin/dmesg -n $LOGLEVEL
>>> else
>>> /bin/dmesg -n 3
>>> fi
>>
>> /bin/dmesg -n ${LOGLEVEL:-3}
>
> That's slick. I presume you meant
> /bin/dmesg -n ${LOGLEVEL:3}
> changing the -3 to a 3? I didn't look up the documentation, just
> extrapolating.
What I wrote means to use the $LOGLEVEL value if defined, else to use the
default value "3". See the bash manual for operators, there are a bunch, of
which ":-" is the one I use most often.
--
Bill Davidsen <davidsen@xxxxxxx>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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