kinit(1) on Linux
The text 955f0c830a3f, as Debian 10 (Buster) shipped it.
obtain and cache Kerberos ticket-granting ticket
Flags it lists
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-A -
-C -
-E -
-F -
-I -
-P -
-R -
-S -
-T -
-V -
-X -
-a -
-c -
-f -
-l -
-n -
-p -
-r -
-s -
-v