:
# loop for all files in the current directory

# if no command line argument is given, set it to current directory
echo Test $0: $# $@
if [ $# = 0 ]
then
    set .
fi 
echo Test $0: $# $@

# loop for each command line argument
for clarg
do

    echo Test $0 $clarg 
    # check to see if clarg is a readable, executable directory
    if [ -d $clarg -a -r $clarg -a -x $clarg ]
    then

        # save current directory and cd to directory in clarg
        echo Test $0 `pwd`
        origDir=`pwd` 
        echo Test $0 $origDir
        cd $clarg

        # loop for each item in the directory
        for loopvar in `ls`
        do
           echo Test $0: loopvar is $loopvar
           # test if the item is a file
           if [ -f $loopvar ]
           then
               echo $loopvar is a file "\c"
               # test if the file is readable
               if [ -r $loopvar ]
               then
                   echo and is readable
               else
                   echo and is NOT readable
               fi
           fi
        done

        # reset directory to original Directory
        cd $origDir

    elif [ -d $clarg ]
    then
        echo $0: Directory \"$clarg\" is not readable and executable 1>&2

    else
        echo $0: Argument \"$clarg\" is not a directory 1>&2

    fi

done