MySQL select on date range

Using date ranges in mysql...
 
select * from sale where date_begin between '2016-08-01' AND '2016-08-31';

Editing in hex mode in Vim

Native Vim doesn’t have a hex editing mode built in, however it is possible to edit a file in hex by converting the file back and forth using xxd. To do this, open your file in Vim and run :%!xxd. From here you can change the hex values and, when you’re done, run :%!xxd -r to convert back.