kinit(1) on Linux
The text 646c71e82355, as Debian 3.1 (Sarge) shipped it.
obtain and cache Kerberos ticket-granting ticket
Flags it lists
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-4 -
-5 -
-A -
-F -
-P -
-R -
-S -
-V -
-a -
-c -
-f -
-l -
-p -
-r -
-s -
-v