ruby on rails - Errno::EACCES: Permission denied @ dir_s_mkdir - /uploads while unzipping -

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i unzipping file uploaded using carrierwave , running code on localhost using console. file there in uploads folder , need unzip reading contents.

zip::file.open(rails.root.to_s + "/public" + self.submission.file_path.to_s) { |zip_file|   puts zip_file.inspect   zip_file.each { |file|     file_path = file.join("solution", file.name)     fileutils.mkdir_p(file.dirname(rails.root + "/public" + self.submission.file_path.to_s))     zip_file.extract(file, file_path) unless file.exist?(file_path)   } }

and giving me error

errno::eacces: permission denied @ dir_s_mkdir - /uploads     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:252:in `mkdir'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:252:in `fu_mkdir'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:226:in `block (2 levels) in mkdir_p'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:224:in `reverse_each'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:224:in `block in mkdir_p'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:210:in `each'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/2.2.0/fileutils.rb:210:in `mkdir_p'     /users/linux/documents/rails/recruitment/app/models/candidate.rb:22:in `block (2 levels) in unzip_solution'     /users/linux/.rvm/gems/ruby-2.2.1/gems/rubyzip-1.1.7/lib/zip/entry_set.rb:42:in `call'     /users/linux/.rvm/gems/ruby-2.2.1/gems/rubyzip-1.1.7/lib/zip/entry_set.rb:42:in `block in each'     /users/linux/.rvm/gems/ruby-2.2.1/gems/rubyzip-1.1.7/lib/zip/entry_set.rb:41:in `each'     /users/linux/.rvm/gems/ruby-2.2.1/gems/rubyzip-1.1.7/lib/zip/entry_set.rb:41:in `each'     /users/linux/.rvm/gems/ruby-2.2.1/gems/rubyzip-1.1.7/lib/zip/central_directory.rb:182:in `each'     /users/linux/documents/rails/recruitment/app/models/candidate.rb:20:in `block in unzip_solution'     /users/linux/.rvm/gems/ruby-2.2.1/gems/rubyzip-1.1.7/lib/zip/file.rb:99:in `open'     /users/linux/documents/rails/recruitment/app/models/candidate.rb:18:in `unzip_solution' ... 2 levels...     /users/linux/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands/console.rb:9:in `start'     /users/linux/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:68:in `console'     /users/linux/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!'     /users/linux/.rvm/gems/ruby-2.2.1/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `block in require'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:274:in `require'     /users/linux/documents/rails/recruitment/bin/rails:9:in `<top (required)>'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:268:in `load'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:268:in `block in load'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:240:in `load_dependency'     /users/linux/.rvm/gems/ruby-2.2.1/gems/activesupport-4.2.2/lib/active_support/dependencies.rb:268:in `load'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'     /users/linux/.rvm/rubies/ruby-2.2.1/lib/ruby/site_ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'


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