Shell scripting help for checking file sizes and send a mail if the file size is greater than specified size.

################################Checking for Large files
#If no. of files> 0 then send
#a mail
#!/bin/sh
SysName=`uname -n`
echo "Checking for large files on $SysName"
"for large files"
Search_Dir=/opt
find $Search_Dir -type f -mtime -1 -size +1024c -exec ls -ld {} ;
| sort -n >/var/opt/logs/LargeFileList.log
# This is not working
$total="`find $Search_WM_Dir -type f -mtime -1 -size +1024c -exec ls -ld {} ;
| wc -l`"
#This is not working
echo $total
echo `cat /var/opt/logs/LargeFileList.log | wc -l`
#This is not working
#$ files="`cat /var/opt/webmethods/logs/LargeFileList.log | wc -l`"
#This is not working
#echo "The total number of files are $files"
if[ `cat /var/opt/logs/LargeFileList.log | wc -l` -gt 0 ]
then
cat /var/optlogs/LargeFileList.log
#cat /var/opt/logs/LargeFileList.log | mail -t user@yahoo.com
fi