question in shell script

Hell guys,
I need a little help to solve this question

Write a Bourne shell script which:
• Has one command line argument.
• If the command line argument is a directory then the script should output the number of files in the directory.
• If the command line argument is an ordinary file then the script should output whether or not the file has execute permission for the file owner.
• If the command line argument is neither a file or directory then the script should output an appropriate error message.
• If no command line argument is supplied then the script should output an appropriate error message.

 

this is my code

Code:

#!/bin/sh

echo " Command line argument is :" $1

if [ -d $1 ]
then
echo " The number of files in the directory is ` ls -l | wc -l` "
else
echo " It is not a dirctory "
fi

if [ -f $1 ]
then
echo " The execute permission for the file owner is ` ls -l $1`"
else
echo " There is no execute permission "
fi

the code might be wrong !!
the time for submission is up !
Thank you

 

Smells like homework anyway...