add a man page for kvno

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/marc-3des@10955 dc483132-0cff-0310-8789-dd5450dbe970

diff --git a/src/clients/kvno/kvno.M b/src/clients/kvno/kvno.M
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+.\" clients/kvnol/kvno.M
+.\" "
+.TH KVNO 1
+.SH NAME
+kvno \- print key version numbers of Kerberos principals
+.SH SYNOPSIS
+\fBklist\fP [\fB\-e etype\fP] \fBservice1\fP \fBservice2\fP \fB...\fP
+.br
+.SH DESCRIPTION
+.I Kvno
+acquires a service ticket for the specified Kerberos principals and
+prints out the key version numbers of each.  
+.SH OPTIONS
+.TP
+.B \-e
+specifies the enctype which will be requested for the session key of
+all the services named on the command line.  This is useful in certain
+backward compatibility situations.
+.SH ENVIRONMENT
+.B Kvno
+uses the following environment variable:
+.TP "\w'.SM KRB5CCNAME\ \ 'u"
+.SM KRB5CCNAME
+Location of the credentials (ticket) cache.
+.SH FILES
+.TP "\w'/tmp/krb5cc_[uid]\ \ 'u"
+/tmp/krb5cc_[uid]
+default location of the credentials cache ([uid] is the decimal UID of
+the user).
+.SH SEE ALSO
+kinit(1), kdestroy(1), krb5(3)