As a verb unshars
is third-person singular of unshar.
As an adjective unsharp is
not sharp (out of focus.
unshars
English
Verb
(head)
(unshar) unshar
English
Verb
(unsharr)
To extract data from a file in the (shar) (shell archive) format.
References
* Usenet newsgroups: [https://groups.google.com/forum/!search/%22unsharring%22]