|Linux & Unix Commands - Search Man Pages
kdestroy - destroy Kerberos tickets
kdestroy [-5] [-4] [-q] [-c cache_name]
The kdestroy utility destroys the user's active Kerberos authorization tickets by writing
zeros to the specified credentials cache that contains 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 Kerberos 4 cre-
dentials. Otherwise, kdestroy will default to destroying only Kerberos 5 credentials.
-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.
use cache_name as the credentials (ticket) cache name and location; 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 environ-
ment 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.
Kdestroy uses the following environment variables:
KRB5CCNAME Location of the Kerberos 5 credentials (ticket) cache.
KRBTKFILE Filename of the Kerberos 4 credentials (ticket) cache.
/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).
kinit(1), klist(1), krb5(3)
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.
All times are GMT -4. The time now is 09:59 AM.