From owner-freebsd-questions  Sun Oct 14 21:48: 6 2001
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Date: Mon, 15 Oct 2001 01:10:59 -0400
To: <doug@safeport.com>
From: Jim Conner <jconner@enterit.com>
Subject: Re: sh script question
Cc: freebsd-questions@FreeBSD.ORG
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X-Loop: FreeBSD.ORG

This is an excellent question.  One that I would resolve by the following:


At 21:09 10.14.2001 -0400, doug@safeport.com wrote:
>I want to read a file line-wise. The following:
>_______________
>#!/bin/sh
>USER="doug"
>FILE="newuser.form"


Good so far but I would go ahead and assign $File:

FILE=${FILE:-1}


>if [ ! -e $FILE ]; then
>   echo "File: $FILE not found"
>   exit 1
>fi

Still good...

>for Line in `cat $FILE`; do
>   echo $Line
>done


I prefer to do things like this for a line by line read without affecting 
the IFS env variable.

while read -r line
do
     echo $line
done < $FILE

That will work fine.  Now, if you want to go the route you were above by 
affecting the IFS variable then you can set IFS like this:

IFS="\n"

for line in $(cat $FILE)
do
     echo $FILE
done

Let me know what you end up choosing.  BTW, I use ksh as my shell of choice 
for scripting.  If sh doesn't understand the above substitution for IFS try 
ksh.

- Jim

>---------------
>
>gives the file a field per read. The field delimiter being 
>blank/whitespace. The
>obvious answer would seem to be "IFS=<newline>" but I can not figure out the
>syntax or even if that is possible.
>
>Thanks for any pointers
>
>_____
>Douglas Denault
>doug@safeport.com
>Voice: 301-469-8766
>   Fax: 301-469-0601
>
>
>To Unsubscribe: send mail to majordomo@FreeBSD.org
>with "unsubscribe freebsd-questions" in the body of the message



- Jim

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