tldr/pages/common/kinit.md

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# kinit
> Authenticate a principal with a Kerberos server to gain and cache a ticket.
> Note: A Kerberos principal can be either a user, service, or application.
> More information: <https://web.mit.edu/kerberos/krb5-1.12/doc/user/user_commands/kinit.html>.
- Authenticate a user and obtain a ticket-granting ticket:
`kinit {{username}}`
- Renew a ticket-granting ticket:
`kinit -R`
- Specify a lifetime for the ticket:
`kinit -l {{5h}}`
- Specify a total renewable lifetime for the ticket:
`kinit -r {{1w}}`
- Specify a different principal name to authenticate as:
`kinit -p {{principal@REALM}}`
- Specify a different keytab file to authenticate with:
`kinit -t {{path/to/keytab}}`