#!/bin/ksh
#A file copy program
if [[  $#  -ne  2 ]]
then
	echo Incorrect number of arguments supplied - The script will now ask you to enter the filenames
	echo "Please give me an input file: \c"
	read ifile
	echo "Please give me an output file: \c"
	read ofile
else
	ifile=$1
	ofile=$2
fi
if [[  -f   $ofile  ]]  
then  
	echo Sorry - output file exists
	exit 
fi
if [[  !  -r  $ifile  ]]  
then 
	Sorry - cannot read input file
	exit 
fi
cp   $ifile   $ofile