kerberos Modified versions of kinit that can use srvtabs or keytabs to authenticate, can run as daemons and wake up periodically to refresh a ticket, and can run single commands with their own authentication credentials and refresh those credentials until the command exits. Enables afs support which means you can acquire an afs token and set PAGs. It's recommended to set this USE if you need authenticated access to an AFS cell for your daemon/app.