Write EXIF date/time from filenames?

[yusheng]

I have a bunch of JPGs with no EXIF and I want to write the date/time stamps to them from the filename.

All the filenames are in this format:

YYYYMMDDHHMMSS.jpg

example: 20120103230412.jpg

How can I use a single command to write all the EXIF tags to an entire directory?

[Phil Harvey]

exiftool "-datetimeoriginal<filename" DIR

There are many other threads in this forum about this topic.  Here are some: 1, 2, 3, 4

- Phil