Modify

   Syntax: modify alias-name new-alias-value

   The modify command is used to replace the expansion value of an
   alias with a new expansion value.

   db> add postmaster "system@thor.example.com"
   [Entry added to database]
   db> show postmaster
   Key         Value
   ----------  -----------------------------
   postmaster  system@thor.example.com
   [1 entry shown]
   db> modify postmaster "JOHN@example.COM"
   db> show postmaster
   Key         Value
   ----------  -----------------------------
   postmaster  JOHN@example.COM
   [1 entry shown]
   db>

   Wild cards can be used when specifying the alias name in order to
   modify one or more aliases simultaneously.