Both stat and ls -l are not suitable for this job. Use date command formatting.
Code:
echo $(date +"%b-%d-%y").log.txt
More examples
Code:
NOW=$(date +"%b-%d-%y")
cp log.txt "$NOW.log.txt"
ls *.txt
See our article Creating report/log file names with date in filename for more info
http://www.cyberciti.biz/nixcraft/vi...-reportlog.php