title: Single command to create a file and set its permission
body: <p>I am using the following 2 commands to create a 0B file and set its extn to 644</p>
  
  <pre><code>touch filename.ext
  chmod 777 filename.txt
  </code></pre>
  
  <p>My question is that whether there is any single command in unix (korn shell) that will do the two things together that is to say create a 0B fil with desired permission?</p>