[ClusterLabs] Antw: Re: Antw: [EXT] Re: DRBD + VDO HowTo?

[Ulrich Windl]

>>> Eric Robinson <eric.robinson at psmnv.com> schrieb am 18.05.2021 um 08:58 in
Nachricht
<SA2PR03MB5884FDFAE54573C4B86B4F8BFA2C9 at SA2PR03MB5884.namprd03.prod.outlook.com>

>>  ‑‑‑‑‑Original Message‑‑‑‑‑
>> From: Users <users‑bounces at clusterlabs.org> On Behalf Of Ulrich Windl
>> Sent: Tuesday, May 18, 2021 12:51 AM
>> To: users at clusterlabs.org 
>> Subject: [ClusterLabs] Antw: [EXT] Re: DRBD + VDO HowTo?
>>
>> >>> Eric Robinson <eric.robinson at psmnv.com> schrieb am 17.05.2021 um
>> 20:28 in
>> Nachricht
>> <SA2PR03MB5884DD970AC5ED0EA56758EFFA2D9 at SA2PR03MB5884.namprd 
>> 03.prod.outlook.com>
>> >         R=$(/usr/bin/vdo status ‑n $VOL|grep Activate|awk
'{$1=$1};1'|cut
>>
>> I just wonder: What is "awk '{$1=$1};1'" supposed to do?
>>
> 
> It replaces all whitespace, including tabs, with single spaces, which makes

> it easy to parse with cut.
> 
>> I also believe that "grep Activate|awk '{$1=$1};1'|cut ‑d" " ‑f2)" can be
done
>> in one awk command.
> 
> I'm sure it could, if I had ever taken time to learn awk.

I'm not using VDO, but my guess would be:
awk '/Activate/ { print $2 }'

Probably the "/Activate/" part could be improved making the match more
specific, but I would have to see the command output...

Regards,
Ulrich

> 
>>
>> Regards,
>> Ulrich
>>
>>
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