Date: Sat, 7 Sep 2002 17:21:31 +0200 From: Ruben de Groot <fbsd-q@bzerk.org> To: Giorgos Keramidas <keramida@ceid.upatras.gr> Cc: "Henning, Brian" <brian.henning@navitaire.com>, questions@FreeBSD.ORG Subject: Re: scripting problems Message-ID: <20020907152131.GA33285@ei.bzerk.org> In-Reply-To: <20020907021348.GB24498@hades.hell.gr> References: <E1846117A30764468D2192D5A48541CC03894DF2@exchange.Navitaire.com> <20020907021348.GB24498@hades.hell.gr>
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On Sat, Sep 07, 2002 at 05:13:48AM +0300, Giorgos Keramidas typed:
> In message: <E1846117A30764468D2192D5A48541CC03894DF2@exchange.Navitaire.com>
> "Henning, Brian" <brian.henning@navitaire.com> wrote:
> >
> > i have this shell script that i am having problems with. when i run
> > it (cat output.txt | xargs sh mycheck_sum.sh) i get an error that
> > cannot open file. but all the files are there. i am not sure what
> > the problem is with this script. can someone take a quick look and
> > tell me if they see anything?
>
> > #! /bin/sh -x
> > # cat output.txt | xargs sh mycheck_sum.sh
> >
> > INPUT=$1
> > SRC=`echo ${INPUT} | awk -F: '{ print $1 }'`
> > DST=`echo ${INPUT} | awk -F: '{ print $2 }'`
>
> xargs will not pass just one argument at a time to your script:
>
> $ cat > lala
> one
> two
> three
> $ xargs echo < lala
> one two three
> $
You can use the -n switch:
$ cat > lala
one
two
three
$ xargs -n1 < lala
one
two
three
>
> You will need to handle all the command line arguments that xargs
> passes to your script with something like:
>
> #!/bin/sh
>
> for arg in "$@" ;do
> # handle $arg
> done
>
> --
> FreeBSD: The Power to Serve -- http://www.FreeBSD.org
>
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