Shell Programming and Scripting

#!/bin/bash
if [ $# -lt 1 ] ; then #Check there is enough command line parameters.
        exit 1
fi

while read i
do #Check whether there is missing file
        if [ ! -e $i ] ; then
                echo "$i does not exist!"
                exit 1
        fi
done < "$1"
echo "All files exist!"
exit 0

echo "Error" 1>&2

#!/bin/bash
if [ $# -lt 1 ] ; then #Check there is enough command line parameters.
      echo "Not enough command line parameters" 1>&2
        exit 1
fi

if [ ! -e $1 ] ; then
		echo "$1 does not exist!" 1>&2
		exit 1
fi

while read i
do #Check whether there is missing file
        if [ ! -e $i ] ; then
                echo "$i does not exist!"
                exit 1
        fi
done < "$1"
echo "All files exist!" 
exit 0

echo "$i does not exist!" >&2