NAME

     kinit — acquire initial tickets

SYNOPSIS

     kinit [--afslog] [-c cachename | --cache=cachename] [-f | --forwardable]
           [-F | --no-forwardable] [-t keytabname | --keytab=keytabname] [-l time |
           --lifetime=time] [-p | --proxiable] [-R | --renew] [--renewable] [-r time |
           --renewable-life=time] [-S principal | --server=principal] [-s time |
           --start-time=time] [-k | --use-keytab] [-v | --validate] [-e enctypes |
           --enctypes=enctypes] [-a addresses | --extra-addresses=addresses]
           [--password-file=filename] [--fcache-version=version-number] [-A | --no-addresses]
           [-n | --anonymous] [--enterprise] [--version] [--help] [principal [command]]

DESCRIPTION

     kinit is used to authenticate to the Kerberos server as principal, or if none is given, a
     system generated default (typically your login name at the default realm), and acquire a
     ticket granting ticket that can later be used to obtain tickets for other services.

     Supported options:

     -c cachename --cache=cachename
             The credentials cache to put the acquired ticket in, if other than default.

     -f --forwardable
             Obtain a ticket than can be forwarded to another host.

     -F --no-forwardable
             Do not obtain a forwardable ticket.

     -t keytabname, --keytab=keytabname
             Don't ask for a password, but instead get the key from the specified keytab.

     -l time, --lifetime=time
             Specifies the lifetime of the ticket.  The argument can either be in seconds, or a
             more human readable string like ‘1h’.

     -p, --proxiable
             Request tickets with the proxiable flag set.

     -R, --renew
             Try to renew ticket.  The ticket must have the ‘renewable’ flag set, and must not be
             expired.

     --renewable
             The same as --renewable-life, with an infinite time.

     -r time, --renewable-life=time
             The max renewable ticket life.

     -S principal, --server=principal
             Get a ticket for a service other than krbtgt/LOCAL.REALM.

     -s time, --start-time=time
             Obtain a ticket that starts to be valid time (which can really be a generic time
             specification, like ‘1h’) seconds into the future.

     -k, --use-keytab
             The same as --keytab, but with the default keytab name (normally
             FILE:/etc/krb5.keytab).

     -v, --validate
             Try to validate an invalid ticket.

     -e, --enctypes=enctypes
             Request tickets with this particular enctype.

     --password-file=filename
             read the password from the first line of filename.  If the filename is STDIN, the
             password will be read from the standard input.

     --fcache-version=version-number
             Create a credentials cache of version version-number.

     -a, --extra-addresses=enctypes
             Adds a set of addresses that will, in addition to the systems local addresses, be
             put in the ticket.  This can be useful if all addresses a client can use can't be
             automatically figured out.  One such example is if the client is behind a firewall.
             Also settable via libdefaults/extra_addresses in krb5.conf(5).

     -A, --no-addresses
             Request a ticket with no addresses.

     -n, --anonymous
             Request an anonymous ticket.  With the default (false) setting of the
             historical_anon_pkinit configuration parameter, if the principal is specified as
             @REALM, then anonymous PKINIT will be used to acquire an unauthenticated anonymous
             ticket and both the client name and (with fully RFC-comformant KDCs) realm in the
             returned ticket will be anonymized.  Otherwise, authentication proceeds as normal
             and the anonymous ticket will have only the client name anonymized.  With
             historical_anon_pkinit set to true, the principal is interpreted as a realm even
             without an at-sign prefix, and it is not possible to obtain authenticated anonymized
             tickets.

     --enterprise
             Parse principal as a enterprise (KRB5-NT-ENTERPRISE) name. Enterprise names are
             email like principals that are stored in the name part of the principal, and since
             there are two @ characters the parser needs to know that the first is not a realm.
             An example of an enterprise name is “lha@e.kth.se@KTH.SE”, and this option is
             usually used with canonicalize so that the principal returned from the KDC will
             typically be the real principal name.

     --afslog
             Gets AFS tickets, converts them to version 4 format, and stores them in the kernel.
             Only useful if you have AFS.

     The forwardable, proxiable, ticket_life, and renewable_life options can be set to a default
     value from the appdefaults section in krb5.conf, see krb5_appdefault(3).

     If  a command is given, kinit will set up new credentials caches, and AFS PAG, and then run
     the given command.  When it finishes the credentials will be removed.

ENVIRONMENT

     KRB5CCNAME
             Specifies the default credentials cache.

     KRB5_CONFIG
             The file name of krb5.conf, the default being /etc/krb5.conf.

SEE ALSO

     kdestroy(1), klist(1), krb5_appdefault(3), krb5.conf(5)