title: Installing Seismic Analysis Code (SAC) On Linux
body: <p>I am having some trouble installing SAC onto Ubuntu.
  I have downloaded all the necessary files but I just 
  don't know how to unzip and untar the files from the 
  command prompt. For those of you with experience in SAC,
  I really appreciate it if you can give me some directions.</p>
  
  <p>Thank you for your help.</p>