title: Alter table via command line
body: <p>I need to alter a table (to change the length and type of a column) of a MySQL database.</p>
  
  <p>The problem is that I need to do this from the command line (in Linux) and I don't really know how.</p>
  
  <p>Can anyone help me? </p>
  
  <p>I have root ssh access.</p>