Shell Programming and Scripting

for i in `ls "$inputdir"
    rundate=`date +%C%y%m%d_%H%M%S`
    nefname="${i}_${rundate}"
end

for k in `ls whatever`; do rundate=`date +%C%y%m%d_%H%M%S`; mv $k $k$rundate; done

ls|while read i; do
  mv "$i" "${i}_$(date +%C%y%m%d_%H%M%S)"
done

for x in `ls /directory/path/*.txt`
do
mv "${x}"  "${x%.txt}_`date '+%Y%m%d'`.txt"
done

i/p
payments.txt

o/p
payments_20100114.txt

 
for x in `ls /directory/path/*.txt`
do
mv "${x}"  "${x%.txt}_`date '+%Y%m%d'`.txt"
done

nefname = mv "${x}"  "${x%.txt}_`date '+%Y%m%d'`.txt"