2011/10/20 Ole Tange <[email protected]>:
> On Wed, Oct 19, 2011 at 11:43 PM, Hans Schou <[email protected]> wrote:
>> On Sat, 15 Oct 2011, Ole Tange wrote:
>>
>>> It is probably time to get a new video out.
>>>
>>> What would you like to see demoed in that?
>>
>> Why not:
>> GNU Parallel for system administrators
>
> Good examples. Keep them coming.
OK, I thought you used them your self:
Scan your private net for which IP-numbers is in use. Save data in a
file for later handling:
time parallel --tag -j+128 ping -W2 -c1 192.168.112.{} \| grep from
::: $(seq 254) | tee foo
I use -j+128 here to start more ping's at the same time. They dont use
RAM, and most of the time they are just waiting those 2 seconds for a
time-out. It should take about 5 seconds to get the full result on any
net.
/hans
