KINIT(1)						      General Commands Manual							  KINIT(1)

NAME

       kinit - obtain and cache Kerberos ticket-granting ticket

SYNOPSIS

       kinit  [-5] [-4] [-V] [-l lifetime] [-s start_time] [-r renewable_life] [-p | -P] [-f | -F] [-A] [-v] [-R] [-k [-t keytab_file]] [-c
	      cache_name] [-S service_name] [principal]

DESCRIPTION

       kinit obtains and caches an initial ticket-granting ticket for principal.Thetypicaldefaultbehavioristoacquireonly Kerberos 5 tickets.  How-
       ever,  if  kinit  was  built  with both Kerberos 4 support and with the default behavior of acquiring both types of tickets, it will try to
       acquire both Kerberos 5 and Kerberos 4 by default.  Any documentation particular to Kerberos 4 does not apply if Kerberos 4 support was not
       built into kinit.

OPTIONS

       -5     get Kerberos 5 tickets.  This overrides whatever the default built-in behavior may be.  This option may be used with -4

       -4     get  Kerberos  4 tickets.  This overrides whatever the default built-in behavior may be.	This option is only available if kinit was
	      built with Kerberos 4 compatibility.  This option may be used with -5

       -V     display verbose output.

       -l lifetime
	      requests a ticket with the lifetime lifetime.  The value for lifetime must be followed immediately by one of  the  following  delim-
	      iters:

		 s  seconds
		 m  minutes
		 h  hours
		 d  days

	      as in "kinit -l 90m".  You cannot mix units; a value of `3h30m' will result in an error.

	      If  the  -l  option  is  not specified, the default ticket lifetime (configured by each site) is used.  Specifying a ticket lifetime
	      longer than the maximum ticket lifetime (configured by each site) results in a ticket with the maximum lifetime.

       -s start_time
	      requests a postdated ticket, valid starting at start_time.  Postdated tickets are issued with the invalid flag set, and need  to	be
	      fed back to the kdc before use.  (Not applicable to Kerberos 4.)

       -r renewable_life
	      requests	renewable tickets, with a total lifetime of renewable_life.  The duration is in the same format as the -l option, with the
	      same delimiters.	(Not applicable to Kerberos 4.)

       -f     request forwardable tickets.  (Not applicable to Kerberos 4.)

       -F     do not request forwardable tickets.  (Not applicable to Kerberos 4.)

       -p     request proxiable tickets.  (Not applicable to Kerberos 4.)

       -P     do not request proxiable tickets.  (Not applicable to Kerberos 4.)

       -A     request address-less tickets.  (Not applicable to Kerberos 4.)

       -v     requests that the ticket granting ticket in the cache (with the invalid flag set) be passed to  the  kdc	for  validation.   If  the
	      ticket is within its requested time range, the cache is replaced with the validated ticket.  (Not applicable to Kerberos 4.)

       -R     requests	renewal  of the ticket-granting ticket.  Note that an expired ticket cannot be renewed, even if the ticket is still within
	      its renewable life.  When using this option with Kerberos 4, the kdc must support Kerberos 5 to Kerberos 4 ticket conversion.

       -k [-t keytab_file]
	      requests a host ticket, obtained from a key in the local host's keytab file.  The name and location of the keytab file may be speci-
	      fied  with the -t keytab_file option; otherwise the default name and location will be used.  When using this option with Kerberos 4,
	      the kdc must support Kerberos 5 to Kerberos 4 ticket conversion.

       -c cache_name
	      use cache_name as the Kerberos 5 credentials (ticket) cache name and location; if this option is not used, the  default  cache  name
	      and location are used.

	      The  default  credentials  cache may vary between systems.  If the KRB5CCNAME environment variable is set, its value is used to name
	      the default ticket cache.  Any existing contents of the cache are destroyed by kinit.  (Note: The default name for Kerberos 4  comes
	      from the KRBTKFILE environment variable.	This option does not apply to Kerberos 4.)

       -S service_name
	      specify  an  alternate  service name to use when getting initial tickets.  (Applicable to Kerberos 5 or if using both Kerberos 5 and
	      Kerberos 4 with a kdc that supports Kerberos 5 to Kerberos 4 ticket conversion.)

ENVIRONMENT

       Kinit uses the following environment variables:

       KRB5CCNAME      Location of the Kerberos 5 credentials (ticket) cache.

       KRBTKFILE      Filename of the Kerberos 4 credentials (ticket) cache.

FILES

       /tmp/krb5cc_[uid]  default location of Kerberos 5 credentials cache ([uid] is the decimal UID of the user).

       /tmp/tkt[uid]  default location of Kerberos 4 credentials cache ([uid] is the decimal UID of the user).

       /etc/krb5.keytab
		      default location for the local host's keytab file.

SEE ALSO

       klist(1), kdestroy(1), krb5(3)

																	  KINIT(1)