module RWhich
Provides a mixin that add’s which
Public Instance Methods
which(filename, path=ENV['PATH'], path_sep=File::PATH_SEPARATOR)
click to toggle source
returns the first executable match of filename in the path
@note Only supports the base use case of the which command line program
@param [String] filename the filename to find @param [String] path the path to search, defaults to ENV @param [String] path_sep the path separator, defaults to File::PATH_SEPARATOR
# File lib/rwhich.rb, line 11 def which filename, path=ENV['PATH'], path_sep=File::PATH_SEPARATOR path = path.split(path_sep).find { |path| File.executable? File.join(path, filename) } path && File.expand_path(filename, path) end