--- /dev/null
+.\" $Source$
+.\" $Author$
+.\" $Id$
+.\" Copyright 1992 by the Massachusetts Institute of Technology.
+.\"
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+.\" to require a specific license from the United States Government.
+.\" It is the responsibility of any person or organization contemplating
+.\" export to obtain such a license before exporting.
+.\"
+.\" WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
+.\" distribute this software and its documentation for any purpose and
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+.\" to distribution of the software without specific, written prior
+.\" permission. M.I.T. makes no representations about the suitability of
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+.\"
+.\"
+.TH KDESTROY 1 "Kerberos Version 5.0" "MIT Project Athena"
+.SH NAME
+kdestroy \- destroy Kerberos tickets
+.SH SYNOPSIS
+.B kdestroy
+[
+.B \-c
+.I cachename
+]
+.SH DESCRIPTION
+The
+.I 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.
+.PP
+In the Athena workstation environment, the
+.I login
+or
+.I Xlogin
+program automatically destroys your tickets when you
+end a workstation session.
+If your site does not provide a similar ticket-destroying mechanism,
+you can place the
+.I kdestroy
+command in your
+.I .logout
+file so that your tickets are destroyed automatically
+when you logout.
+.PP
+.SH SEE ALSO
+kerberos(1), kinit(1), klist(1)
+.SH BUGS
+.PP
+Only the tickets in the user's current ticket file are destroyed.
+Separate ticket files are used to hold root instance and password
+changing tickets. These files should probably be destroyed too, or
+all of a user's tickets kept in a single ticket file.