Date: Fri, 1 Feb 2002 00:06:55 +0800 (CST) From: =?iso-8859-1?q?adrian=20kok?= <adriankok2000@yahoo.com.hk> To: Joel Dinel <dinjo@touchtunes.com> Cc: questions@FreeBSD.ORG Subject: Re: compare two files Message-ID: <20020131160655.42352.qmail@web21203.mail.yahoo.com> In-Reply-To: <20020131105553.A39923@sunder.touchtunes.com>
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Joel
But the diff also outputs the data of fileB
I only need fileA data whether it exists to fileB
Thank you
--- Joel Dinel <dinjo@touchtunes.com> wrote: > It
already exists, and it's called 'diff'.
>
> man diff
>
>
> On Thu, Jan 31, 2002 at 11:50:13PM +0800, adrian kok
> wrote:
> > Date: Thu, 31 Jan 2002 23:50:13 +0800 (CST)
> > From: adrian kok <adriankok2000@yahoo.com.hk>
> > Subject: compare two files
> > To: freebsd-questions@FreeBSD.ORG
> >
> > I would like to know how to write script or
> program to
> > compare two file
> >
> > two files: file1 and file2
> >
> > check data of file1 whether exists in file2
> >
> > if not
> >
> > write this data in file1 or output to file
> >
> > #!/bin/sh
> > $lista=fopen("a.txt", "r");
> > $listb=fopen("b.txt", "r");
> >
> > while(!feof($lista)) {
> > $dmbuffer = fgets ($lista);
> > grep $dmbuffer $listb > diff;
> > }
> >
> > Could you teach me or where can I get this
> information
> > from website
> >
> > TIA
> >
> >
> >
>
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> ---end quoted text---
>
> --
> Joel Dinel
> System Administrator
> TouchTunes Digital Jukebox, Inc.
> GnuPG key :
http://darkhost.mine.nu:81/~joel/misc/mykey.asc
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