Re: Bash

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#12222

From: Claudio S. Suarez
Date: Tue, 14 Aug 2001 21:55

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El Sun, 12 Aug 2001 22:13:21 -0300, Francisco F. Artese escribi�:
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>
>Hola amigos
>
>En bash como transformo una variable de tipo $pepe para que sea una
>expresi�n num�rica????????
>
>de manera que pueda hacer:
>
>a=`expr $pepe + $juan`


No necesitas conversi�n. Puedes hacer:
pepe="12"
juan=`grep connect /var/log/messages | cut -f4`
a=`expr $pepe + $juan`

Y funcionar�. Incluso puedes usar $((   ))

a=$(( $pepe + $juan ))

>y formar un n�mero hc=horac*60+minutosc+segundosc/60

hc=$(( $horac * 60 + $minutosc + $segundosc / 60 ))

Un saludo.
--claudio--

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From: claudio@ningun.sitio.es (Claudio S. Suarez)
Newsgroups: es.comp.os.linux.programacion
Subject: Re: Bash
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