k5start can be used instead of kinit to obtain Kerberos tickets. krenew
can be used instead of kinit -R to renew renewable tickets. They are
intended primarily for use with automated or long-running processes and
support some additional features useful for that purpose, such as running
as a daemon and refreshing the ticket periodically, checking to see if an
existing ticket has expired, or obtaining an AFS token along with the
ticket by running an external program automatically.

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