Date: Tue, 13 Jul 2010 17:45:12 -0600 From: Chad Perrin <perrin@apotheon.com> To: "questions@freebsd.org" <questions@freebsd.org> Subject: Re: .sh check for sufix g or m on size field Message-ID: <20100713234512.GA35912@guilt.hydra> In-Reply-To: <20100712155805.GD2192@libertas.local.camdensoftware.com> References: <4C3B26B4.1000208@comclark.com> <20100712155805.GD2192@libertas.local.camdensoftware.com>
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On Mon, Jul 12, 2010 at 08:58:05AM -0700, Chip Camden wrote:
> Quoth Aiza on Monday, 12 July 2010:
> > Sorry miss send, was not done yet.
> >
> > Have a .sh script that accepts an -s sparse file size.
> > Only 2 suffix's are valid m and g.
> >
> > Been trying to get this line of code to strip out just the single
> > letter. But it strips the letter and every thing to the right of it.
> >
> > Timagesize=`echo-n "${imagesize}" | sed 's/g.*$//'`
> >
> > I plan to strip just the m or g if its there and the result should be
> > numeric. If not numeric know invalid suffix.
> >
> > Need help with the sed syntax. Or if there is better way I want to learn
> > it.
> >
> > Thanks
> > _______________________________________________
> > freebsd-questions@freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"
>
> It sounds like what you want is simply:
>
> sed 's/[gm]//'
>
> Or am I missing something?
I get the impression it's something more like this:
sed 's/[gm]$//'
I'm not sure, but there may be a need to check whether the rest of the
line is solely numeric, too. The original question was not exactly clear
on that point.
--
Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]
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