Replace filename with filepath with sed

Question

I want to replace the string

/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.3.99/lib/cucumber.rb

with the string

/opt/local/lib/ruby/gems/1.8/gems/cucumber-0.3.99/lib/

on the command line, probably using sed. I can't for the life of me figure out the replacement regex to pass to sed. Or maybe sed isn't even the right tool for the job. Any help would be appreciated.

Answer 1

no need for sed:

dirname /usr/local/bin/program

will return /usr/local/bin