module Which
This module provides the equivalent of the unix which command. It is used by the ImageMagick
module to check for the extistence of the ImageMagick
command 'identify'.
Public Class Methods
which(command)
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# File lib/utilities/which.rb, line 6 def self.which(command) ENV['PATH'].split(File::PATH_SEPARATOR).each do |path| command_path = File.join(path, command) return command_path if File.executable? command_path end nil end