for i in $*
do
if [ -d $i ]
then
echo "large filename size is"
echo `ls -lR $1 | grep "^-" | tr -s ' ' | cut -d' ' -f 5 | sort -n| tail -1` > out
else
echo "not directory"
fi
done


filename="rit.txt"
if [ -e $filename ]
then
mv -f $filename $filename"_old"
touch $filename
else
echo “File does not exist ---Creating”
touch $filename
fi


crontab -e //install your cron job by running this command.
crontab -l : List the all your cron jobs.
crontab -r : Delete the current cron jobs.
0, 30 * * * * 1.sh


echo "'$*' output is $*"
echo "'$#' output is $#"
echo "'$1 & $2' output is $1 and $2"
echo "'$@' output is $@"
echo "'$?' output is $?"
echo "'$$' output is $$"
sleep 400 &
echo "'$!' output is $!"
echo "'$0' your current program name is $0"