exit [ n ]
       Exit  the  shell with the exit code specified by n;
       if none is specified, use the exit  code  from  the
       last  command executed.  An EOF condition will also
       cause the shell  to  exit,  unless  the  IGNORE EOF
       option is set.

bye    Same as exit.

logout [ n ]
       Same as exit, except that it only works in a  login
       shell.
