clean out old kernel versions?

[Dave Stevens]

Linux user-Satellite-A100 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18
18:34:49 UTC 2016 i686 i686 i686 GNU/Linux

cat /etc/issue
Linux Mint 18 Sarah \n \l

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/boot has 440 files in it, almost all of which are old kernel entries.
Is there a simple way to get rid of all but the most recent few (2 or
3)?

I could find a use for that 4.4 GB of disk space.

D

-- 
In modern fantasy (literary or governmental), killing people is the
usual solution to the so-called war between good and evil. My books are
not conceived in terms of such a war, and offer no simple answers to
simplistic questions.

----- Ursula Le Guin