#!/bin/sh
#A file copy program called copy
if [  $#  -ne  2 ]
then
	echo  " Run me as follows : copy  file(from)  file(to) "
	exit
fi
if [  -f   $2  ]; then
	echo " Output file already exists"
	 exit
 fi
if [  !  -r  $1    -o    \( -d  $2    -a    !  -w  $2 \)  ]; then
	echo "File/Directory permissions wrong"
	 exit
 fi
cp  $1  $2
echo " $1 copied to  $2 "