How to redirect STDOUT of subscript into variable in ruby 2.1.6 -

here full code far:

if argv.size == 0     print "set library name parameter" else     dir = argv[0]     begin         dir.chdir "#{dir}"     rescue         print "no such library"     else         filelist = dir.glob "*.rb"         outfile = "result"         = 0         while < filelist.size             filename = filelist[i]             output = load "./#{filename}"             if output == 1                 file.open(outfile, 'a+') { |file| file.write("#{filename}")}             end             += 1         end     end end 

the subscripts i'm trying run can either contain this: print "1" or this: print "0".

i want write "result" file

filename :: ok

if print "1", ,

filename :: wrong

if print "2".

my problem output equals true instead of 1 or 0. how redirect subscript's stdout output variable?

this should give output :

output = `ruby #{filename}` 

note : returns string, comparing output number. necessary conversions.