[Solved] encapsulating a date in filename

user88710 Asks: encapsulating a date in filename
I have a ton of video files that contain a date as such; “filename 1981.mkv”, basically a “space + date + .”, I would like to enclose the date in parenthesis, ie – “filename (1981).mkv”.

Apparently I was not clear enough; some files have the year in the filename, some do not. some files have other numbers in the filename. some of the filenames have already been changed (manually)

I am not bash-savvy enough to figure this out on my own, help is appreciated!

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