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Path: utzoo!linus!security!genrad!grkermit!masscomp!clyde!ihnp4!houxm!hogpc!pegasus!guidi
From: guidi@pegasus.UUCP
Newsgroups: net.unix
Subject: Re: 'c' shell scripts
Message-ID: <828@pegasus.UUCP>
Date: Wed, 14-Dec-83 10:14:53 EST
Article-I.D.: pegasus.828
Posted: Wed Dec 14 10:14:53 1983
Date-Received: Fri, 16-Dec-83 02:14:04 EST
References: <14504@sri-arpa.UUCP>
Organization: AT&T Information Systems, Lincroft NJ
Lines: 15

How to read lines from a file and then go back to standard input
inside a shell script?  I use the following MODEL (Bourne Shell) which
may give some inkling on how to do it with other shells:
    tty=`tty`        # where std in is
    exec < a-file    # the file I want to read
    read line        # read a line from the file
    while [ "$?" = 0 ] # until error return (EOF) from "read"
    do
    echo $line       # process what I read from file
    read line        # get the next line (if any)
    done
    exec < $tty      # change std in to something else
    echo "terminal input?\c"   # etc.....
    read line
    echo $line