SYNOPSIS

       kdestroy [-5] [-4] [-q] [-c cache_name]


DESCRIPTION

       The  kdestroy 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.  If kdestroy was built with Kerberos  4
       support,  the  default  behavior is to destroy both Kerberos 5 and Ker-
       beros 4 credentials.  Otherwise, kdestroy will  default  to  destroying
       only Kerberos 5 credentials.


OPTIONS

       -5     destroy  Kerberos  5  credentials.   This overrides whatever the
              default built-in behavior may be.  This option may be used  with
              -4

       -4     destroy  Kerberos  4  credentials.   This overrides whatever the
              default built-in behavior may be.  This option is only available
              if  kinit  was built with Kerberos 4 compatibility.  This option
              may be used with -5

       -q     Run quietly.  Normally kdestroy beeps if it fails to destroy the
              user's tickets.  The -q flag suppresses this behavior.

       -c cache_name
              use  cache_name 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 kdestroy command in
       your .logout file, so that your  tickets  are  destroyed  automatically
       when you log out.


ENVIRONMENT

       Kdestroy uses the following environment variables:

       KRB5CCNAME      Location  of the Kerberos 5 credentials (ticket) cache.

       KRBTKFILE      Filename of the Kerberos 4 credentials (ticket) cache.


FILES

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

       /tmp/tkt[uid]  default  location of Kerberos 4 credentials cache ([uid]
                      is the decimal UID of the user).


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