title: Unix How to check if a specific word is entered in as an argument
body: <p>I'm writing a script in Unix but I need a way to check an argument that is entered in the command line is a specific word.</p>
  
  <p>So if when using the script the user types:</p>
  
  <pre><code>$ ./script hello 
  </code></pre>
  
  <p>my script can tell that "hello" was entered as an argument and can display a message appropriately.</p>
  
  <p>And if the user types something other than "hello" as an argument then my script can display another message.</p>
  
  <p>Thanks.</p>