added #sh method, some tweaks to info command and Implementation class

lib/pik/commands/command.rb

@@ -168,6 +168,11 @@ def delete_old_pik_batches( cutoff=(Time.now - (2 * 60 * 60)) )
       end
     end
 
+    def sh(cmd)
+      puts cmd if debug
+      system(cmd)
+    end
+
     def cmd_name
       self.class.cmd_name
     end

lib/pik/commands/info_command.rb

@@ -46,15 +46,14 @@ def info
 
 file associations:
 .rb:           #{file_associations('.rb')}
-.rbw:          #{file_associations('.rbw')}
-#{check_path}
+.rbw:          #{file_associations('.rbw')}#{check_path} 
 INFO
     end
 
     def check_path
       dirs = Which::Ruby.find_all
       unless dirs.size == 1
-        dirs.unshift("\nwarning: There is more than one version of ruby in the system path")
+        dirs.unshift("\n\nwarning: There is more than one version of ruby in the system path")
         dirs.join("\n")
       end
     end

lib/pik/commands/install_command.rb

@@ -19,7 +19,7 @@ def initialize(args=ARGV, config_=nil)
     def execute
       implementation  = Implementations[@args.shift]
       target, package = implementation.find(*@args)
-      target          =  @install_root + "#{implementation.subclass}-#{target.gsub('.','')}"
+      target          = @install_root + implementation.name + target.gsub('.','')
       file            = download(package)
       extract(target, file)
       add( Pathname(target) + 'bin' )

lib/pik/commands/update_command.rb

@@ -7,15 +7,8 @@ class Update < Command
     include BatchFileEditor
 
     def execute
-      default
-      results = `#{Which::Gem.exe} update pik`
-      puts results
-      update_re = /Nothing to update/
-      @batch.call("pik_install #{PIK_BATCH.dirname}") unless results.match(update_re)
-    end
-
-    def default
-      # should move to default implementation before attemping an update
+      sh "#{Which::Gem.exe} install pik"
+      @batch.call("pik_install #{PIK_BATCH.dirname}")
     end
 
   end

lib/pik/implementations.rb

@@ -71,6 +71,7 @@ def read
       def subclass
         self.class.to_s.split('::').last
       end
+      alias :name :subclass
 
     end