title: rpm command not working on centOS 7?
body: <p>rpm command was working but suddenly it stopped working. When I try install it by command: </p>
  
  <pre><code>sudo yum install rpm 
  </code></pre>
  
  <p>It is saying: </p>
  
  <pre><code>[admin@localhost rabitmqSample]$ sudo yum install rpm
  Loaded plugins: fastestmirror, langpacks
  Loading mirror speeds from cached hostfile
   * base: repo.inara.pk
   * epel: epel.scopesky.iq
   * extras: repo.inara.pk
   * updates: repo.inara.pk
   * webtatic: us-east.repo.webtatic.com
  Package rpm-4.11.3-25.el7.x86_64 already installed and latest version
  Nothing to do
  [admin@localhost rabitmqSample]$  rmp https://packages.erlang-solutions.com/erlang/riak/FLAVOUR_1_main/riak_2.2.3-1~centos~7_amd64.rpm
  bash: rmp: command not found...
  Similar command is: 'rpm'
  </code></pre>
  
  <p>Any solution what is wrong ?</p>
  
  <p>I have run already update command...
  This question is related dependencies for a programming development purpose. I am developing something in php and going to use RabitMQ for messaging services.  </p>