请帮忙查看下，ruby执行报错

战魔312

[root@agent bin]# ./redis-stat --help
/usr/local/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- redis-stat (LoadError)
        from /usr/local/lib/ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
        from ./redis-stat:4:in `<main>'
[root@agent bin]# ^C
[root@agent bin]# ruby -v
ruby 2.1.3p242 (2014-09-19 revision 47630) [x86_64-linux]
[root@agent bin]#

bikong0411

cannot load such file -- redis-stat