hide the empty file with git

hidefile.sh

#!/bin/sh                                                                                                               
FILE_NAME='empty'
if [ $1 ! = ''] && [$1 = '-f' ] && [$2 != ''];then
    FILE_NAME = $2
else
    echo '====================================================='
    echo 'cleana.sh -f filename '
    echo ' set the file name,if not,default name is '$FILE_NAME
    echo '====================================================='
fi
FILE_LIST=`find . -name $FILE_NAME`
#echo $FILE_LIST                                                                                                        
for f in $FILE_LIST;
do
#    echo $f;                                                                                                           
    DST_PATH=`dirname $f`
    echo 'start execute mv '$f $DST_PATH'/.'$FILE_NAME
    mv $f $DST_PATH'/.'$FILE_NAME
    echo 'success\n'
done;