### Adding or Modifying Policies

To add a new policy, use the kadmin `add_policy` command, which requires the "add" administrative privilege. The syntax is:

         add_policy [options] policy_name

To modify attributes of a principal, use the kadmin `modify_policy` command, which requires the "modify" administrative privilege. The syntax is:

         modify_policy [options] policy_name

`add_policy` has the alias `addpol`. `modify_poilcy` has the alias `modpol`.

The `add_policy` and `modify_policy` commands take the following switches:

-maxlife time
  Sets the maximum lifetime of a password to time.
-minlife time
  Sets the minimum lifetime of a password to time.
-minlength length
  Sets the minimum length of a password to length characters.
-minclasses number
  Requires at least number of character classes in a password.
-history number
  Sets the number of past keys kept for a principal to number.