Ruby中正确转义shell参数

代码如下:

desc "Find 301 errors on production servers"
task :find301 do
  command = "grep 'HTTP/1.1\" 301' /var/log/httpd/*ssl-access.log | grep -v 'gclid' | awk '{print \$7}' | sort | uniq -c | sort -nr"

  production_servers.each do |server|
    sh "ssh root@#{server} #{command}"
  end
end

是否有更好的方法来转义shell命令,最好是以允许 sh "ssh root@#{server} #{command}" 用于任意 command s