[PLUG] extended 'cut' functionality?

[Randall A Sindlinger <rsindlin+plug@seas.upenn.edu>]

Hi folks,

Quick (stupid) question.

The 'cut' utility will let me do trivial string manipulation counting
from the beginning of a string.

Is there anything that provides similar, but extended, functionality to
count from the _end_ of a string?

Specifically, I'd like to be able to 
  cd `perldoc -l Some::module | cut-from-end 3`

Sure, I know there are other things I could do, like doing
  cut -d . -f 1
or an awk thing, but both of those just don't feel "right".  It should
be trivial to snip off the end of a string from the command line.

I'd google it, but I can't imagine the crud I'd have to wade through.

-Randall

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