xen-tools

[Top] [All Lists]

Re: [Xen-tools] [PATCH] Add a --format parameter to xm list

from [Rusty Russell]

[Permanent Link][Original]

To:	Anthony Liguori <aliguori@xxxxxxxxxx>
Subject:	Re: [Xen-tools] [PATCH] Add a --format parameter to xm list
From:	Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Date:	Thu, 11 Aug 2005 12:39:30 +1000
Cc:	Xen Tools <xen-tools@xxxxxxxxxxxxxxxxxxx>
Delivery-date:	Thu, 11 Aug 2005 02:37:35 +0000
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<42FA7DD3.9090606@xxxxxxxxxx>
List-help:	<mailto:xen-tools-request@lists.xensource.com?subject=help>
List-id:	Xen control tools developers <xen-tools.lists.xensource.com>
List-post:	<mailto:xen-tools@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-tools>, <mailto:xen-tools-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-tools>, <mailto:xen-tools-request@lists.xensource.com?subject=unsubscribe>
References:	<42FA7DD3.9090606@xxxxxxxxxx>
Sender:	xen-tools-bounces@xxxxxxxxxxxxxxxxxxx

On Wed, 2005-08-10 at 17:21 -0500, Anthony Liguori wrote:
> The following patch adds a --format option to xm list which let's you 
> specify a python formatting string to use.  Since we're using named 
> keys, it ends up working very nicely.  The above can be done with:
> 
> res=`xm list -f "%(mem)d" $VM`
> 
> Which is considerably nicer and more robust against slight changes in 
> the display format.

I know several tools go this way, but actually prefer one or more "-f
<fieldname>" args, and an "-s <seperator>" (or -0 for a nul) arg.  That
makes getting a single field very easy, without doing formatting in xend
which people might start to rely on.

This is analogous to the "old modinfo" vs "new modinfo" where I decided
to do it this way.

Cheers,
Rusty.
-- 
A bad analogy is like a leaky screwdriver -- Richard Braakman

_______________________________________________
Xen-tools mailing list
Xen-tools@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-tools

[More with this subject...]

<Prev in Thread]	Current Thread	[Next in Thread>
[Xen-tools] [PATCH] Add a --format parameter to xm list, Anthony Liguori Re: [Xen-tools] [PATCH] Add a --format parameter to xm list, Rusty Russell <= RE: [Xen-tools] [PATCH] Add a --format parameter to xm list, Ian Pratt

Previous by Date:	[Xen-tools] Re: [Fwd: Question about use of xenstore], Rusty Russell
Next by Date:	[Xen-tools] Re: xenbus block device support, Rusty Russell
Previous by Thread:	[Xen-tools] [PATCH] Add a --format parameter to xm list, Anthony Liguori
Next by Thread:	RE: [Xen-tools] [PATCH] Add a --format parameter to xm list, Ian Pratt
Indexes:	[Date] [Thread] [Top] [All Lists]