# File lib/cft/commands/pack.rb, line 21
        def execute(session, args)
            unless @tarball
                $stderr.puts "You must specify the name of the tarball to create"
                $stderr.puts opts
                return 1
            end
            spath = session.path
            %x{tar -czf #{@tarball} -C #{File::dirname(spath)} #{File::basename(spath)} 2>&1}
            unless $?.success?
                $stderr.puts "Failed to create #{@tarball}: #{$?.exitstatus}"
            end
            return $?.exitstatus
        end