Shell Programming and Scripting

#!/bin/sh
case $# in
	0)	echo "Usage: enshar file [ ... ]" >&2
		exit 1
		;;
	*)	for file
		do	
		if [ -d $file ]
		then echo "enshar: $file is a directory" >&2
		exit 3
		elif [ ! -f $file ]
		then echo "enshar: $file doesn't exist" >&2
		exit 4
		elif [ ! -r $file ]
		then echo "enshar: $file can't be read" >&2
		exit 5 
		elif [ -h $file ]
		then echo "enshar: $file can't enshar" >&2 
		exit 6
		else 	
			echo "cat > $file <<\!EnShAr!\"
			echo "!EnShAr!"
			echo "set 'cksum $file'"
			echo"cksum" $file
			check=$1
			echo "test $1 = $check || echo $0: bad cksum in $file >&2 " >> shar
			echo "cat > $file <<\!EnShAr!" >> shar
		fi
		done
		;;
esac

for Z in 'a' 'b' 'c' 'd' 'e'
do
        echo "${Z}"
done

# Must have at least one commandline argument
if [[ $# -eq 0 ]]
then
        echo "Not enough arguments"
        exit 1
fi

# Continue on