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OpenSolaris 2009.06 - man page for nischttl (opensolaris section 1)

nischttl(1)				  User Commands 			      nischttl(1)

NAME
       nischttl - change the time to live value of a NIS+ object

SYNOPSIS
       nischttl [-AfLP] time name...

DESCRIPTION
       nischttl  changes the time to live value (ttl) of the NIS+ objects or entries specified by
       name to time. Entries are specified using indexed names (see nismatch(1)).

       The time to live value is used by object caches to expire objects within their cache. When
       an  object  is  read  into  the	cache, this value is added to the current time in seconds
       yielding the time when the cached object would expire. The object may be returned from the
       cache  until  the  current  time  is earlier than the calculated expiration time. When the
       expiration time has been reached, the object will be  flushed from the cache.

       The time to live time may be specified in seconds or in days, hours, minutes, seconds for-
       mat.  The  latter  format  uses a suffix letter of d, h,  m, or s to identify the units of
       time. See the examples below for usage.

       The command will fail if the master NIS+ server is not running.

       Setting a high  ttl value allows objects to stay persistent in caches for a longer  period
       of  time  and can improve performance. However, when an object changes, in the worst case,
       the number of seconds in this attribute must pass before that change  is  visible  to  all
       clients. Setting a  ttl value of 0 means that the object should not be cached at all.

       A  high	 ttl  value is a week, a low value is less than a minute. Password entries should
       have  ttl values of about 12 hours (easily allows one password change per  day),   entries
       in  the	RPC  table can have  ttl values of several weeks (this information is effectively
       unchanging).

       Only directory and group objects are cached in this implementation.

OPTIONS
       The following options are supported:

       -A    Modify all tables in the concatenation path that match the search	criterion  speci-
	     fied in name. This option implies the -P switch.

       -f    Force the operation and fail silently if it does not succeed.

       -L    Follow links and change the time to live of the linked object or entries rather than
	     the  time to live of the link itself.

       -P    Follow the concatenation path within a named table. This  option  only  makes  sense
	     when either name is an indexed name or the -L switch is also specified and the named
	     object is a link pointing to entries.

EXAMPLES
       Example 1 Changing the ttl of an Object

       The following example shows how to change the  ttl of an  object using the seconds  format
       and  the  days,	hours, minutes, seconds format. The  ttl of the second object is set to 1
       day and 12 hours.

	 example% nischttl 184000 object
	 example% nischttl 1d12h object

       Example 2 Changing the ttl for a password Entry

       This example shows how to change the  ttl for a password entry.

	 example% nischttl 1h30m '[uid=99],passwd.org_dir'

       Example 3 Changing the ttl of Entries Pointed to by a Link

       The next two examples change the  ttl of the object or entries pointed to by a  link,  and
       the  ttl of all entries in the hobbies table.

	 example% nischttl -L 12h linkname
	 example% nischttl 3600 '[],hobbies'

ENVIRONMENT VARIABLES
       NIS_PATH    If this variable is set, and the NIS+ name is not fully qualified, each direc-
		   tory specified will be searched until the object is found. See nisdefaults(1).

EXIT STATUS
       The following exit values are returned:

       0    Successful operation.

       1    Operation failed.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWnisu			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       NIS+(1),   nischgrp(1),	  nischmod(1),	  nischown(1),	  nisdefaults(1),    nismatch(1),
       nis_objects(3NSL), attributes(5)

NOTES
       NIS+  might  not be supported in future releases of the Solaris operating system. Tools to
       aid the migration from NIS+ to LDAP are available in the current Solaris release. For more
       information, visit http://www.sun.com/directory/nisplus/transition.html.

SunOS 5.11				    2 Dec 2005				      nischttl(1)


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