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it(8)									 it(8)

NAME
       it - configure a system after installation

SYNOPSIS
       /sbin/it

DESCRIPTION
       The it program executes scripts before transferring control of the sys‐
       tem to the user, typically before the first user logs in.  The it  pro‐
       gram  executes  programs	 that collect information such as system name,
       passwords, timezone, and current date.

       A system can be in a run level at any given time; each run level has  a
       specific	 group	of  processes that run at that level. The init program
       operates in one of four run levels: 0,  s,  2,  or  3.  The  run	 level
       changes	when  init is invoked by a privileged user.  The it program is
       run from /etc/inittab whenever the system is  booted  or	 rebooted,  or
       when  a	level  transition occurs for some other reason, such as within
       init3. The it program first determines which run level  the  system  is
       coming  up  under.  Next it turns on shared libraries and swap and then
       searches for  any  /sbin/it.d/run-level	directories,  where  run-level
       names  a	 system	 run level; for example, 2.d, 3.d, 23.d, and so forth.
       If any such directories exist, it collects the names of	all  files  in
       those  directories.   These  files  are typically links to files in the
       /sbin/it.d/bin directory and are created beforehand by itruns(8). After
       collecting  the	file names, it sorts them, eliminates duplicate refer‐
       ences,	orders	 the   names   as   specified	by   the   data	  file
       /sbin/it.d/data/options.mask,  executes	the files, and finally removes
       the files it executed.  After all the  files  collected	from  the  run
       level directories have been handled, it exits.

       The  /sbin/it.d/data/options.mask  file	contains  a single line with a
       list of file names separated by colons.	The it command	executes  col‐
       lected  files  in  the order in which they appear from left to right in
       the options.mask file.  Programs not listed in  the  options.mask  file
       are  executed  after those defined in options.mask. These “unspecified”
       programs are run in the order into which they  were  initially  sorted;
       that  order  is controlled by the LC_COLLATE environmental variable and
       the specifications in the /usr/lib/nls/loc/locale files.

FILES
       Specifies execution priorities of files to be run by  it	 Files	to  be
       linked by itruns(8) for execution by it

SEE ALSO
       Commands: init(8), itruns(8), rc0(8), rc2(8), rc3(8), who(1)

									 it(8)
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