title: Bash Centos7 "which" command
body: <p>I realize this might be a dumb question but I have a Centos-7 minimal server install and the "which" command does not exist or is missing.
  I have a script that needs it and I cannot find out what the yum package is that installs it.
  The code is below and is from a make file.</p>
  
  <pre><code>which grep &gt; /dev/null 2&gt; /dev/null
  
  if test "$?" != "0"
  then
      echo "\"grep\" command not found."
      echo "Installation is aborted."
      exit 1
  fi
  </code></pre>
  
  <p>Any help would be appreciated... this is difficult if not impossible to google</p>