    [1mSYNOPSIS[0m
           [1mkdestroy [22m[[1m-A[22m] [[1m-q[22m] [[1m-c [4m[22mcache_name][0m

    [1mDESCRIPTION[0m
           The  [4mkdestroy[24m utility destroys the user's active Kerberos authorization
           tickets by writing zeros to the specified credentials cache  that  con-
           tains  them.   If  the  credentials cache is not specified, the default
           credentials cache is destroyed.

    [1mOPTIONS[0m
           [1m-A     [22mDestroys all caches in the collection, if a cache collection  is
                  available.  [1m-q [22mRun quietly.  Normally [1mkdestroy [22mbeeps if it fails
                  to destroy the user's tickets.   The  [1m-q  [22mflag  suppresses  this
                  behavior.

           [1m-c [4m[22mcache_name[0m
                  use  [4mcache_name[24m as the credentials (ticket) cache name and loca-
                  tion; if this option is not used, the  default  cache  name  and
                  location are used.

                  The  default credentials cache may vary between systems.  If the
                  KRB5CCNAME environment variable is set, its  value  is  used  to
                  name the default ticket cache.

           Most  installations  recommend  that  you place the [4mkdestroy[24m command in
           your [4m.logout[24m file, so that your  tickets  are  destroyed  automatically
           when you log out.

    [1mENVIRONMENT[0m
           [1mKdestroy [22muses the following environment variables:

           KRB5CCNAME      Location of the default Kerberos 5 credentials (ticket)
                           cache, in the form [4mtype[24m:[4mresidual[24m.  If no type prefix is
                           present,  the  [1mFILE  [22mtype  is assumed.  The type of the
                           default cache may determine the availability of a cache
                           collection;  for  instance, a default cache of type [1mDIR[0m
                           causes caches within the directory to be present in the
                           collection.

    [1mFILES[0m
           /tmp/krb5cc_[uid]  default  location  of  Kerberos  5 credentials cache
                              ([uid] is the decimal UID of the user).

    [1mSEE ALSO[0m
           kinit(1), klist(1), krb5(3)

    [1mBUGS[0m
           Only the tickets in the  specified  credentials  cache  are  destroyed.
           Separate  ticket  caches  are  used  to hold root instance and password
           changing tickets.  These should probably be destroyed too, or all of  a
           user's tickets kept in a single credentials cache.