For finding the files older than 31 days
find . -name “filename.ext” -mtime +no_of_days -exec ls -ltr {} ; e.g find . -name “*req” -mtime +31 -exec ls -ltr {} ;
Verify the timestamp of all the files.They must be older than 5 weeks For Deleting files older that 31 days :
find . -name “*req” -mtime +31 -exec rm {} ;
Verify after execution of the above.
Execute: find . -name “*req” -mtime +31 -exec ls -ltr {} ;